Finite Group Databasebeta

← #23777232

Subgroups — #23777232

Order 10112.

1152 conjugacy classes of subgroups.

The subgroup lattice has 616 nodes — too large to display as a diagram.

Conjugacy classes of subgroups

#subgroupG/Hclass sizemultiplicitynormal?properties
1#19099266C212yesmaximal, complemented
2#19099264C212yesmaximal, complemented
3#19099258C212yesmaximal, complemented
4#19099245C212yesmaximal, complemented
5#19099240C212yesmaximal, complemented
6#19099238C212yesmaximal, complemented
7#19099223C212yesmaximal, complemented
8#19099205C212yesmaximal, complemented
9#19099160C211yesmaximal, characteristic, complemented
10#19099153C211yesmaximal, characteristic, complemented
11#19099150C211yesmaximal, characteristic, complemented
12#19099124C212yesmaximal, complemented
13#19099090C212yesmaximal, complemented
14#19099072C212yesmaximal, complemented
15C22⋊Q8×D79C211yesmaximal, characteristic, complemented
16#121×D79C211yesmaximal, characteristic, complemented
17#19099035C212yesmaximal, complemented
18C2×#14579123C211yesmaximal, characteristic, complemented
19#539×C79C211yesmaximal, characteristic, complemented
20C2×#11929624C2212yescomplemented
21C2×Q8×D79C2211yescharacteristic, complemented
22C22×D316C2211yescharacteristic
23C2×D4×D79C2212yes—
24C2×D4×D79C2211yescharacteristic, complemented
25C22×C4×D79C2211yescharacteristic
26C22×C4×D79C2211yescharacteristic, complemented
27#14579156C2212yescomplemented
28#14579156C2212yescomplemented
29#14579156C2212yescomplemented
30#14579156C2212yescomplemented
31#14579154C2212yescomplemented
32#14579151C2212yescomplemented
33#14579151C2212yescomplemented
34#14579150C2212yescomplemented
35#14579147C2212yescomplemented
36#14579147C2212yescomplemented
37#14579146C2212yes—
38#14579146C2212yes—
39#14579146C2212yescomplemented
40#14579146C2212yescomplemented
41#14579146C2212yescomplemented
42#14579145C2212yescomplemented
43#14579144C2212yescomplemented
44#14579143C2212yescomplemented
45#14579141C2211yescharacteristic, complemented
46#14579140C2211yescharacteristic, complemented
47#14579139C2212yescomplemented
48#14579139C2212yescomplemented
49#14579139C2212yescomplemented
50#14579138C2212yescomplemented
51#14579137C2211yescharacteristic, complemented
52#14579136C2212yescomplemented
53#14579136C2212yescomplemented
54#14579136C2212yescomplemented
55#14579136C2211yescharacteristic, complemented
56#14579135C2211yescharacteristic
57#14579134C2212yescomplemented
58#14579134C2212yescomplemented
59#14579134C2212yescomplemented
60#14579134C2212yescomplemented
61#14579133C2212yes—
62#14579133C2212yescomplemented
63#14579132C2211yescharacteristic, complemented
64#14579131C2212yes—
65#14579131C2212yes—
66#14579131C2212yescomplemented
67#14579129C2212yescomplemented
68#14579126C2212yescomplemented
69C4×D316C2212yescomplemented
70C4×D316C2212yescomplemented
71D4×Dic79C2212yescomplemented
72#14579123C2212yes—
73#14579123C2212yes—
74#14579123C2212yescomplemented
75#14579123C2212yescomplemented
76#14579123C2212yescomplemented
77C4×C22⋊D79C2212yescomplemented
78C4×C22⋊D79C2212yescomplemented
79C4×C22⋊D79C2212yescomplemented
80(C22⋊D79)⋊C4C2212yescomplemented
81(C22⋊D79)⋊C4C2212yescomplemented
82(C22⋊D79)⋊C4C2212yescomplemented
83#14579119C2212yescomplemented
84#14579119C2212yescomplemented
85#14579118C2212yescomplemented
86#14579118C2212yescomplemented
87#14579117C2212yescomplemented
88C4⋊C4×D79C2211yescharacteristic, complemented
89C4⋊C4×D79C2212yescomplemented
90C4⋊C4×D79C2211yescharacteristic, complemented
91C2×(C2×D79)⋊C4C2211yescharacteristic
92C2×(C2×D79)⋊C4C2211yescharacteristic, complemented
93C2×(C2×D79)⋊C4C2212yescomplemented
94C22⋊C4×D79C2212yes—
95C22⋊C4×D79C2212yescomplemented
96C22⋊C4×D79C2212yescomplemented
97C2×C4×Dic79C2211yescharacteristic, complemented
98#126×C79C2212yescomplemented
99#125×C79C2212yescomplemented
100#123×C79C2212yescomplemented
101#123×C79C2212yescomplemented
102C22⋊Q8×C79C2211yescharacteristic, complemented
103C22⋊Q8×C79C2212yescomplemented
104#121×C79C2211yescharacteristic
105C4×D4×C79C2212yescomplemented
106C2×C4⋊C4×C79C2211yescharacteristic, complemented
107C23×D79C2312yes—
108C23×D79C2311yescharacteristic
109C23×D79C2311yescharacteristic
110#11929624—44no—
111C2×Dic158C2312yes—
112C2×Dic158C2311yescharacteristic
113Q8×D79—42no—
114C2×D316—24no—
115C2×D316C2312yes—
116C2×D316C2312yes—
117C2×D316C2312yes—
118C2×D316C2312yes—
119C2×D316C2312yes—
120C2×D316C2311yescharacteristic
121C2×C22⋊D79C2312yes—
122C2×C22⋊D79C2312yes—
123C2×C22⋊D79C2312yes—
124C2×C22⋊D79C2312yes—
125C2×C22⋊D79C2312yes—
126D4×D79—28no—
127D4×D79—42no—
128C22×Dic79C2311yescharacteristic
129C22×Dic79C2311yescharacteristic
130C22×Dic79C2312yes—
131C2×C4×D79—42no—
132C2×C4×D79—42no—
133C2×C4×D79C2311yescharacteristic
134C2×C4×D79C2312yes—
135C2×C4×D79C2312yes—
136C2×C4×D79C2311yescharacteristic
137C2×C4×D79C2312yes—
138C2×C4×D79C2312yes—
139C2×C4×D79C2312yes—
140C2×C4×D79C2311yescharacteristic
141C2×C4×D79C2312yes—
142C2×C4×D79C2311yescharacteristic
143C2×C4×D79C2312yes—
144C4⋊Dic79C2312yes—
145C4⋊Dic79C2311yescharacteristic
146C4⋊Dic79C2311yescharacteristic
147C4⋊Dic79C2312yes—
148Dic79⋊C4C2312yes—
149Dic79⋊C4C2312yes—
150Dic79⋊C4C2312yes—
151Dic79⋊C4C2312yes—
152Dic79⋊C4C2312yes—
153Dic79⋊C4C2312yes—
154Dic79⋊C4C2312yes—
155Dic79⋊C4C2312yes—
156C22⋊Dic79C2312yes—
157C22⋊Dic79C2312yes—
158C22⋊Dic79C2312yes—
159(C2×D79)⋊C4C2312yes—
160(C2×D79)⋊C4C2312yes—
161(C2×D79)⋊C4C2312yes—
162(C2×D79)⋊C4C2312yes—
163(C2×D79)⋊C4C2312yes—
164(C2×D79)⋊C4C2312yes—
165(C2×D79)⋊C4C2312yes—
166(C2×D79)⋊C4C2312yes—
167(C2×D79)⋊C4C2312yes—
168(C2×D79)⋊C4C2312yes—
169(C2×D79)⋊C4C2312yes—
170(C2×D79)⋊C4C2312yes—
171(C2×D79)⋊C4C2312yes—
172(C2×D79)⋊C4C2312yes—
173(C2×D79)⋊C4C2312yes—
174(C2×D79)⋊C4C2312yes—
175C4×Dic79C2312yes—
176C4×Dic79C2312yes—
177C4×Dic79C2312yes—
178C4×Dic79C2312yes—
179C4×Dic79C2312yes—
180C2×Q8×C79C2311yescharacteristic
181C2×D4×C79C2312yes—
182C2×D4×C79C2311yescharacteristic
183C22×C4×C79C2311yescharacteristic
184C22×C4×C79C2312yes—
185C22×C4×C79C2311yescharacteristic
186C22×C4×C79C2311yescharacteristic
187C4⋊C4×C79C2312yes—
188C4⋊C4×C79C2312yes—
189C4⋊C4×C79C2312yes—
190C4⋊C4×C79C2311yescharacteristic
191C4⋊C4×C79C2312yes—
192C4⋊C4×C79C2312yes—
193C4⋊C4×C79C2311yescharacteristic
194C4⋊C4×C79C2312yes—
195C22⋊C4×C79C2312yes—
196C22⋊C4×C79C2312yes—
197C22⋊C4×C79C2312yes—
198C22⋊C4×C79C2312yes—
199C22⋊C4×C79C2312yes—
200C42×C79C2312yes—
201C23×C79C2412yes—
202C23×C79C2411yescharacteristic
203C22×D79—22no—
204C22×D79—24no—
205C22×D79—41no—
206C22×D79—41no—
207C22×D79—41no—
208C22×D79—41no—
209C22×D79—42no—
210C22×D79—42no—
211C22×D79#4114yescomplemented
212C22×D79C2412yes—
213C22×D79C2412yes—
214C22×D79C2411yescharacteristic
215C22×D79C2411yescharacteristic
216Q8×C79—41no—
217D4×C79—24no—
218D4×C79—41no—
219C2×C4×C79—22no—
220C2×C4×C79—41no—
221C2×C4×C79—41no—
222C2×C4×C79—42no—
223C2×C4×C79C2412yes—
224C2×C4×C79C2412yes—
225C2×C4×C79C2412yes—
226C2×C4×C79C2412yes—
227C2×C4×C79C2411yescharacteristic
228C2×C4×C79C2412yes—
229C2×C4×C79C2411yescharacteristic
230C22⋊D79—24no—
231C22⋊D79—24no—
232C22⋊D79—24no—
233C22⋊D79—42no—
234C22⋊D79—42no—
235C2×Dic79—22no—
236C2×Dic79—42no—
237C2×Dic79—41no—
238C2×Dic79C2412yes—
239C2×Dic79C2412yes—
240C2×Dic79C2411yescharacteristic
241C2×Dic79C2412yes—
242C2×Dic79C2412yes—
243C2×Dic79C2411yescharacteristic
244D316—24no—
245D316—24no—
246D316—24no—
247D316—41no—
248D316—42no—
249D316—42no—
250C4×D79—24no—
251C4×D79—22no—
252C4×D79—22no—
253C4×D79—24no—
254C4×D79—42no—
255C4×D79—41no—
256C4×D79—41no—
257C4×D79—42no—
258C4×D79—42no—
259C4×D79—42no—
260C4×D79—42no—
261Dic158—24no—
262Dic158—41no—
263C22×C79—21no—
264C22×C79—21no—
265C22×C79—22no—
266C22×C79—22no—
267C22×C79—22no—
268C22×C79C2×#4112yes—
269C22×C79C2511yescharacteristic
270C2×D79—21no—
271C2×D79—21no—
272C2×D79—21no—
273C2×D79—21no—
274C2×D79—22no—
275C2×D79—22no—
276C2×D79—22no—
277C2×D79—22no—
278C2×D79—22no—
279C2×D79—22no—
280C2×D79—44no—
281C2×D79—44no—
282C2×D79—84no—
283C2×D79C2×#4112yes—
284C2×D79C2×#4112yes—
285C4×C79—22no—
286C4×C79—22no—
287C4×C79—22no—
288C4×C79—21no—
289C4×C79—22no—
290C4×C79—21no—
291C4×C79—22no—
292Dic79—22no—
293Dic79—22no—
294Dic79—21no—
295Dic79—22no—
296Dic79—22no—
297Dic79H(5,𝔽2)12yes—
298C2×C79—22no—
299C2×C79—42no—
300C2×C79C22×#4111yescharacteristic
301C2×C79C2×H(5,𝔽2)11yescharacteristic
302C2×C79#58511yescharacteristic
303D79—22no—
304D79—22no—
305D79—42no—
306D79—42no—
307#3505—791nomaximal, Sylow
308C79#350511yescharacteristic, complemented, Sylow
309#553—792no—
310#553—792no—
311#553—792no—
312#552—792no—
313#551—792no—
314#551—792no—
315#548—792no—
316#546—792no—
317#539—791no—
318#539D7911yescharacteristic, complemented
319#538—791no—
320#538—791no—
321#534—792no—
322#529—792no—
323#525—792no—
324C2×C22⋊Q8—791no—
325C2×#121—791no—
326#518—792no—
327C2×C4×D4—791no—
328C2×#41—792no—
329C22×Q8—791no—
330C22×D4—791no—
331C22×D4—792no—
332C22×D4—791no—
333C23×C4—791no—
334C23×C4—791no—
335#126—792no—
336#126—792no—
337#126—792no—
338#126—792no—
339#126—792no—
340#126C2×D7912yescomplemented
341#125—792no—
342#125—792no—
343#125C2×D7912yescomplemented
344#124—792no—
345#124—792no—
346#124—792no—
347#123—792no—
348#123—792no—
349#123—792no—
350#123—792no—
351#123—792no—
352#123—792no—
353#123—792no—
354#123—792no—
355#123C2×D7912yescomplemented
356#123C2×D7912yescomplemented
357C22⋊Q8—791no—
358C22⋊Q8—791no—
359C22⋊Q8—792no—
360C22⋊Q8—791no—
361C22⋊Q8—792no—
362C22⋊Q8—792no—
363C22⋊Q8—792no—
364C22⋊Q8C2×D7911yescharacteristic, complemented
365C22⋊Q8C2×D7912yescomplemented
366#121—792no—
367#121—791no—
368#121—792no—
369#121—791no—
370#121—791no—
371#121—792no—
372#121—792no—
373#121—792no—
374#121—792no—
375#121—792no—
376#121—792no—
377#121—792no—
378#121C2×D7911yescharacteristic
379#120—792no—
380#120—792no—
381#120—792no—
382#120—792no—
383C4×Q8—792no—
384C4×D4—792no—
385C4×D4—792no—
386C4×D4—792no—
387C4×D4—792no—
388C4×D4—792no—
389C4×D4—792no—
390C4×D4—792no—
391C4×D4—792no—
392C4×D4—792no—
393C4×D4—792no—
394C4×D4—792no—
395C4×D4—792no—
396C4×D4—792no—
397C4×D4—792no—
398C4×D4C2×D7912yescomplemented
399#117—792no—
400#117—792no—
401#117—792no—
402#117—792no—
403#117—792no—
404C2×C4⋊C4—791no—
405C2×C4⋊C4—791no—
406C2×C4⋊C4—792no—
407C2×C4⋊C4C2×D7911yescharacteristic, complemented
408C2×C22⋊C4—791no—
409C2×C22⋊C4—791no—
410C2×C22⋊C4—792no—
411C2×C22⋊C4—792no—
412C2×C22⋊C4—792no—
413C2×C22⋊C4—792no—
414C2×C42—791no—
415C24—791no—
416C24—792no—
417C24—791no—
418#41—3164no—
419C2×Q8—3162no—
420C2×Q8—791no—
421C2×Q8—792no—
422C2×Q8C22×D7911yescharacteristic
423C2×D4—3162no—
424C2×D4—792no—
425C2×D4—792no—
426C2×D4—792no—
427C2×D4—792no—
428C2×D4—792no—
429C2×D4—792no—
430C2×D4—792no—
431C2×D4—791no—
432C2×D4—792no—
433C2×D4—792no—
434C2×D4—792no—
435C2×D4—1584no—
436C2×D4—1588no—
437C2×D4C22×D7912yes—
438C2×D4C22×D7911yescharacteristic
439C22×C4—3162no—
440C22×C4—3162no—
441C22×C4—791no—
442C22×C4—792no—
443C22×C4—791no—
444C22×C4—792no—
445C22×C4—792no—
446C22×C4—792no—
447C22×C4—792no—
448C22×C4—791no—
449C22×C4—792no—
450C22×C4—791no—
451C22×C4—792no—
452C22×C4—791no—
453C22×C4—791no—
454C22×C4—792no—
455C22×C4C22×D7911yescharacteristic
456C22×C4C22×D7911yescharacteristic
457C22×C4C22×D7911yescharacteristic
458C22×C4C22×D7912yes—
459C4⋊C4—792no—
460C4⋊C4—792no—
461C4⋊C4—792no—
462C4⋊C4—792no—
463C4⋊C4—792no—
464C4⋊C4—792no—
465C4⋊C4—792no—
466C4⋊C4—792no—
467C4⋊C4—792no—
468C4⋊C4—791no—
469C4⋊C4—791no—
470C4⋊C4—792no—
471C4⋊C4C22×D7911yescharacteristic
472C4⋊C4C22×D7912yes—
473C4⋊C4C22×D7911yescharacteristic
474C4⋊C4C22×D7912yes—
475C4⋊C4C22×D7912yes—
476C4⋊C4C22×D7912yes—
477C4⋊C4C22×D7912yes—
478C4⋊C4C22×D7912yes—
479C22⋊C4—792no—
480C22⋊C4—792no—
481C22⋊C4—792no—
482C22⋊C4—792no—
483C22⋊C4—792no—
484C22⋊C4—792no—
485C22⋊C4—792no—
486C22⋊C4—792no—
487C22⋊C4—792no—
488C22⋊C4—792no—
489C22⋊C4—792no—
490C22⋊C4—792no—
491C22⋊C4—792no—
492C22⋊C4—792no—
493C22⋊C4—792no—
494C22⋊C4—792no—
495C22⋊C4—792no—
496C22⋊C4—792no—
497C22⋊C4—792no—
498C22⋊C4C22×D7912yes—
499C22⋊C4C22×D7912yes—
500C22⋊C4C22×D7912yes—
501C22⋊C4C22×D7912yes—
502C22⋊C4C22×D7912yes—
503C42—792no—
504C42—792no—
505C42—792no—
506C42—792no—
507C42—792no—
508C42C22×D7912yes—
509C23—3161no—
510C23—3161no—
511C23—3161no—
512C23—3161no—
513C23—3162no—
514C23—3162no—
515C23—794no—
516C23—791no—
517C23—791no—
518C23—792no—
519C23—792no—
520C23—1584no—
521C23—1582no—
522C23C23×D7912yes—
523C23C23×D7911yescharacteristic
524Q8—41no—
525Q8—3161no—
526Q8—1584no—
527D4—24no—
528D4—41no—
529D4—3161no—
530D4—3162no—
531D4—3162no—
532D4—3162no—
533D4—3162no—
534D4—1584no—
535D4—1584no—
536D4—1584no—
537D4—1584no—
538D4—1584no—
539D4—1584no—
540C2×C4—22no—
541C2×C4—41no—
542C2×C4—41no—
543C2×C4—42no—
544C2×C4—3162no—
545C2×C4—3161no—
546C2×C4—3161no—
547C2×C4—3162no—
548C2×C4—3162no—
549C2×C4—3162no—
550C2×C4—3162no—
551C2×C4—3161no—
552C2×C4—3162no—
553C2×C4—791no—
554C2×C4—792no—
555C2×C4—792no—
556C2×C4—791no—
557C2×C4—792no—
558C2×C4—792no—
559C2×C4—1582no—
560C2×C4—1582no—
561C2×C4—1584no—
562C2×C4—1584no—
563C2×C4—1582no—
564C2×C4C23×D7912yes—
565C2×C4C23×D7912yes—
566C2×C4C23×D7912yes—
567C2×C4C23×D7912yes—
568C2×C4C23×D7912yes—
569C2×C4C23×D7911yescharacteristic
570C2×C4C23×D7911yescharacteristic
571C22—21no—
572C22—21no—
573C22—22no—
574C22—22no—
575C22—22no—
576C22—3164no—
577C22—3164no—
578C22—792no—
579C22—792no—
580C22—6324no—
581C22—1582no—
582C22—1582no—
583C22—1582no—
584C22—1582no—
585C22—1582no—
586C22—1582no—
587C22—1581no—
588C22—1581no—
589C22—1581no—
590C22—1581no—
591C22#41×D7912yes—
592C22C24×D7911yescharacteristic
593C4—22no—
594C4—21no—
595C4—21no—
596C4—22no—
597C4—22no—
598C4—22no—
599C4—22no—
600C4—792no—
601C4—1581no—
602C4—1582no—
603C4—1582no—
604C4—1582no—
605C4—1582no—
606C2—22no—
607C2—42no—
608C2—3162no—
609C2—3162no—
610C2—1582no—
611C2—1582no—
612C2C2×#41×D7911yescharacteristic
613C2H(5,𝔽2)×D7911yescharacteristic
614C2#1909940011yescharacteristic
subgroupG/H
center, FrattiniC22C24×D79
commutator, socle, cosocleC22×C79C25
Fitting#539×C79C2
hypercenter#539D79
hypocenterC79#3505
LCSG ▷ C22×C79 ▷ C79
UCSC1 ◁ C22 ◁ #539

Complements

Splittings G = N ⋊ H with N normal; H ≅ G/N.

NH ≅ G/Ntype
1. #19099266C2semidirect
2. #19099264C2semidirect
3. #19099258C2semidirect
4. #19099245C2semidirect
5. #19099240C2semidirect
6. #19099238C2semidirect
7. #19099223C2semidirect
8. #19099205C2semidirect
9. #19099160C2semidirect
10. #19099153C2semidirect
11. #19099150C2semidirect
12. #19099124C2semidirect
13. #19099090C2semidirect
14. #19099072C2semidirect
15. C22⋊Q8×D79C2semidirect
16. #121×D79C2semidirect
17. #19099035C2semidirect
18. C2×#14579123C2semidirect
19. #539×C79C2semidirect
20. C2×#11929624C22semidirect
21. C2×Q8×D79C22semidirect
24. C2×D4×D79C22semidirect
26. C22×C4×D79C22semidirect
27. #14579156C22semidirect
28. #14579156C22semidirect
29. #14579156C22semidirect
30. #14579156C22semidirect
31. #14579154C22semidirect
32. #14579151C22semidirect
33. #14579151C22semidirect
34. #14579150C22semidirect
35. #14579147C22semidirect
36. #14579147C22semidirect
39. #14579146C22semidirect
40. #14579146C22semidirect
41. #14579146C22semidirect
42. #14579145C22semidirect
43. #14579144C22semidirect
44. #14579143C22semidirect
45. #14579141C22semidirect
46. #14579140C22semidirect
47. #14579139C22semidirect
48. #14579139C22semidirect
49. #14579139C22semidirect
50. #14579138C22semidirect
51. #14579137C22semidirect
52. #14579136C22semidirect
53. #14579136C22semidirect
54. #14579136C22semidirect
55. #14579136C22semidirect
57. #14579134C22semidirect
58. #14579134C22semidirect
59. #14579134C22semidirect
60. #14579134C22semidirect
62. #14579133C22semidirect
63. #14579132C22semidirect
66. #14579131C22semidirect
67. #14579129C22semidirect
68. #14579126C22semidirect
69. C4×D316C22semidirect
70. C4×D316C22semidirect
71. D4×Dic79C22semidirect
74. #14579123C22semidirect
75. #14579123C22semidirect
76. #14579123C22semidirect
77. C4×C22⋊D79C22semidirect
78. C4×C22⋊D79C22semidirect
79. C4×C22⋊D79C22semidirect
80. (C22⋊D79)⋊C4C22semidirect
81. (C22⋊D79)⋊C4C22semidirect
82. (C22⋊D79)⋊C4C22semidirect
83. #14579119C22semidirect
84. #14579119C22semidirect
85. #14579118C22semidirect
86. #14579118C22semidirect
87. #14579117C22semidirect
88. C4⋊C4×D79C22semidirect
89. C4⋊C4×D79C22semidirect
90. C4⋊C4×D79C22semidirect
92. C2×(C2×D79)⋊C4C22semidirect
93. C2×(C2×D79)⋊C4C22semidirect
95. C22⋊C4×D79C22semidirect
96. C22⋊C4×D79C22semidirect
97. C2×C4×Dic79C22semidirect
98. #126×C79C22semidirect
99. #125×C79C22semidirect
100. #123×C79C22semidirect
101. #123×C79C22semidirect
102. C22⋊Q8×C79C22semidirect
103. C22⋊Q8×C79C22semidirect
105. C4×D4×C79C22semidirect
106. C2×C4⋊C4×C79C22semidirect
211. C22×D79#41semidirect
308. C79#3505semidirect
318. #539D79semidirect
340. #126C2×D79semidirect
343. #125C2×D79semidirect
355. #123C2×D79semidirect
356. #123C2×D79semidirect
364. C22⋊Q8C2×D79semidirect
365. C22⋊Q8C2×D79semidirect
398. C4×D4C2×D79semidirect
407. C2×C4⋊C4C2×D79semidirect