← #36712469
Subgroups — #36712469
Order 22784.
498 conjugacy classes of subgroups.
The subgroup lattice has 344 nodes — too large to display as a diagram.
Conjugacy classes of subgroups
| # | subgroup | G/H | class size | multiplicity | normal? | properties |
|---|
| 1 | #26033258 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 2 | #26022524 | C2 | 1 | 2 | yes | maximal |
| 3 | #26022504 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 4 | #26022311 | C2 | 1 | 2 | yes | maximal |
| 5 | #26022302 | C2 | 1 | 2 | yes | maximal, complemented |
| 6 | #26022299 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 7 | #26022297 | C2 | 1 | 1 | yes | maximal, characteristic |
| 8 | #26022161 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 9 | #26022121 | C2 | 1 | 2 | yes | maximal, complemented |
| 10 | C4×#15667956 | C2 | 1 | 1 | yes | maximal, characteristic |
| 11 | C89×#3393 | C2 | 1 | 1 | yes | maximal, characteristic |
| 12 | #19152327 | — | 2 | 1 | no | — |
| 13 | C2×#15667958 | C22 | 1 | 2 | yes | — |
| 14 | C2×#15667958 | C22 | 1 | 2 | yes | — |
| 15 | C2×#15667958 | C22 | 1 | 2 | yes | — |
| 16 | C2×#15667956 | C22 | 1 | 1 | yes | characteristic |
| 17 | C2×#15667956 | C22 | 1 | 2 | yes | — |
| 18 | #19151978 | C22 | 1 | 1 | yes | characteristic |
| 19 | #19151978 | C22 | 1 | 2 | yes | — |
| 20 | #19151809 | — | 2 | 1 | no | — |
| 21 | #19151809 | — | 2 | 2 | no | — |
| 22 | C4×Dic356 | C22 | 1 | 1 | yes | characteristic |
| 23 | C4×Dic356 | C22 | 1 | 2 | yes | — |
| 24 | #19151425 | C22 | 1 | 1 | yes | characteristic |
| 25 | C4⋊#13083549 | C22 | 1 | 1 | yes | characteristic |
| 26 | C4⋊#13083549 | C22 | 1 | 2 | yes | — |
| 27 | #19151402 | C22 | 1 | 2 | yes | — |
| 28 | #19151401 | C22 | 1 | 2 | yes | — |
| 29 | #19151401 | C22 | 1 | 1 | yes | characteristic |
| 30 | #19151399 | C22 | 1 | 1 | yes | characteristic |
| 31 | #19151374 | C22 | 1 | 2 | yes | — |
| 32 | C4×#13083549 | C22 | 1 | 1 | yes | characteristic |
| 33 | #556×C89 | — | 2 | 1 | no | — |
| 34 | #495×C89 | C22 | 1 | 2 | yes | — |
| 35 | #494×C89 | C22 | 1 | 1 | yes | characteristic |
| 36 | #464×C89 | — | 2 | 2 | no | — |
| 37 | #461×C89 | — | 2 | 1 | no | — |
| 38 | C8×Q8×C89 | C22 | 1 | 1 | yes | characteristic |
| 39 | C4×Q16×C89 | C22 | 1 | 2 | yes | — |
| 40 | C4×D8×C89 | C22 | 1 | 1 | yes | characteristic |
| 41 | C2×Dic356 | — | 2 | 1 | no | — |
| 42 | C2×Dic356 | — | 2 | 2 | no | — |
| 43 | C2×Dic356 | C23 | 1 | 1 | yes | characteristic |
| 44 | C2×Dic356 | C23 | 1 | 2 | yes | — |
| 45 | #15668012 | — | 2 | 1 | no | — |
| 46 | #15668012 | — | 2 | 2 | no | — |
| 47 | #15668003 | — | 4 | 1 | no | — |
| 48 | #15668003 | — | 4 | 2 | no | — |
| 49 | Q8×Dic89 | — | 4 | 1 | no | — |
| 50 | C4×Dic178 | — | 2 | 1 | no | — |
| 51 | C4×Dic178 | — | 2 | 2 | no | — |
| 52 | #15667958 | — | 2 | 4 | no | — |
| 53 | #15667958 | — | 4 | 2 | no | — |
| 54 | #15667958 | — | 4 | 2 | no | — |
| 55 | #15667956 | — | 2 | 2 | no | — |
| 56 | #15667956 | — | 4 | 2 | no | — |
| 57 | C2×#13083549 | C23 | 1 | 1 | yes | characteristic |
| 58 | C2×#13083549 | C23 | 1 | 2 | yes | — |
| 59 | C2×#13083549 | C23 | 1 | 1 | yes | characteristic |
| 60 | #15667946 | C23 | 1 | 1 | yes | characteristic |
| 61 | #15667937 | — | 2 | 1 | no | — |
| 62 | #15667937 | — | 2 | 2 | no | — |
| 63 | C2×Q16×C89 | — | 2 | 1 | no | — |
| 64 | C2×Q16×C89 | C23 | 1 | 2 | yes | — |
| 65 | C2×SD16×C89 | — | 2 | 2 | no | — |
| 66 | C2×D8×C89 | C23 | 1 | 1 | yes | characteristic |
| 67 | C4⋊Q8×C89 | — | 2 | 1 | no | — |
| 68 | #126×C89 | — | 4 | 2 | no | — |
| 69 | #124×C89 | — | 2 | 2 | no | — |
| 70 | C22⋊Q8×C89 | — | 4 | 1 | no | — |
| 71 | C4×Q8×C89 | — | 2 | 2 | no | — |
| 72 | C4×Q8×C89 | D4 | 1 | 1 | yes | characteristic |
| 73 | C4×D4×C89 | — | 2 | 1 | no | — |
| 74 | #117×C89 | — | 4 | 1 | no | — |
| 75 | #107×C89 | C23 | 1 | 1 | yes | characteristic |
| 76 | C4⋊C8×C89 | D4 | 1 | 1 | yes | characteristic |
| 77 | C4⋊C8×C89 | D4 | 1 | 2 | yes | — |
| 78 | #103×C89 | — | 2 | 2 | no | — |
| 79 | #102×C89 | — | 2 | 1 | no | — |
| 80 | C4×C8×C89 | C23 | 1 | 1 | yes | characteristic |
| 81 | C4×C8×C89 | C23 | 1 | 2 | yes | — |
| 82 | C2×Dic178 | — | 2 | 1 | no | — |
| 83 | C2×Dic178 | — | 2 | 2 | no | — |
| 84 | Dic356 | — | 2 | 1 | no | — |
| 85 | Dic356 | — | 2 | 2 | no | — |
| 86 | Dic356 | — | 2 | 2 | no | — |
| 87 | Dic356 | — | 2 | 1 | no | — |
| 88 | Dic356 | — | 8 | 2 | no | — |
| 89 | Dic356 | — | 8 | 1 | no | — |
| 90 | C4⋊Dic89 | — | 2 | 1 | no | — |
| 91 | C4⋊Dic89 | — | 4 | 2 | no | — |
| 92 | C4⋊Dic89 | — | 4 | 1 | no | — |
| 93 | C4⋊Dic89 | — | 4 | 2 | no | — |
| 94 | C4⋊Dic89 | — | 4 | 1 | no | — |
| 95 | #13083553 | — | 4 | 2 | no | — |
| 96 | #13083553 | — | 4 | 1 | no | — |
| 97 | C4×Dic89 | — | 4 | 2 | no | — |
| 98 | C4×Dic89 | — | 4 | 1 | no | — |
| 99 | #13083549 | — | 2 | 2 | no | — |
| 100 | #13083549 | — | 2 | 1 | no | — |
| 101 | #13083549 | #41 | 1 | 2 | yes | — |
| 102 | C2×Q8×C89 | — | 2 | 2 | no | — |
| 103 | C2×Q8×C89 | D8 | 1 | 1 | yes | characteristic |
| 104 | C2×D4×C89 | — | 2 | 1 | no | — |
| 105 | C22×C4×C89 | — | 4 | 1 | no | — |
| 106 | Q16×C89 | — | 2 | 2 | no | — |
| 107 | Q16×C89 | — | 2 | 2 | no | — |
| 108 | Q16×C89 | — | 8 | 1 | no | — |
| 109 | SD16×C89 | — | 8 | 2 | no | — |
| 110 | D8×C89 | — | 2 | 1 | no | — |
| 111 | D8×C89 | — | 2 | 1 | no | — |
| 112 | C2×C8×C89 | C2×D4 | 1 | 1 | yes | characteristic |
| 113 | C2×C8×C89 | C2×D4 | 1 | 2 | yes | — |
| 114 | C2×C8×C89 | C24 | 1 | 1 | yes | characteristic |
| 115 | C4⋊C4×C89 | — | 2 | 1 | no | — |
| 116 | C4⋊C4×C89 | — | 4 | 1 | no | — |
| 117 | C4⋊C4×C89 | — | 4 | 2 | no | — |
| 118 | C4⋊C4×C89 | — | 4 | 1 | no | — |
| 119 | C4⋊C4×C89 | D8 | 1 | 1 | yes | characteristic |
| 120 | C4⋊C4×C89 | D8 | 1 | 2 | yes | — |
| 121 | C22⋊C4×C89 | — | 4 | 2 | no | — |
| 122 | C22⋊C4×C89 | — | 4 | 1 | no | — |
| 123 | C22⋊C4×C89 | — | 4 | 2 | no | — |
| 124 | C42×C89 | — | 4 | 2 | no | — |
| 125 | C42×C89 | C2×D4 | 1 | 1 | yes | characteristic |
| 126 | C42×C89 | C2×D4 | 1 | 2 | yes | — |
| 127 | C23×C89 | — | 4 | 1 | no | — |
| 128 | Q8×C89 | — | 2 | 2 | no | — |
| 129 | Q8×C89 | — | 4 | 2 | no | — |
| 130 | Q8×C89 | — | 4 | 2 | no | — |
| 131 | D4×C89 | — | 4 | 1 | no | — |
| 132 | D4×C89 | — | 4 | 1 | no | — |
| 133 | C2×C4×C89 | — | 4 | 1 | no | — |
| 134 | C2×C4×C89 | — | 4 | 2 | no | — |
| 135 | C2×C4×C89 | — | 8 | 2 | no | — |
| 136 | C2×C4×C89 | C2×D8 | 1 | 2 | yes | — |
| 137 | C2×C4×C89 | C2×D8 | 1 | 1 | yes | characteristic |
| 138 | C2×C4×C89 | C2×D8 | 1 | 2 | yes | — |
| 139 | C2×C4×C89 | C2×D8 | 1 | 1 | yes | characteristic |
| 140 | C2×C4×C89 | C22×D4 | 1 | 1 | yes | characteristic |
| 141 | C2×Dic89 | — | 4 | 1 | no | — |
| 142 | C2×Dic89 | — | 4 | 2 | no | — |
| 143 | C2×Dic89 | — | 4 | 1 | no | — |
| 144 | Dic178 | — | 4 | 1 | no | — |
| 145 | Dic178 | — | 4 | 2 | no | — |
| 146 | Dic178 | — | 4 | 1 | no | — |
| 147 | Dic178 | — | 4 | 2 | no | — |
| 148 | C8×C89 | — | 2 | 2 | no | — |
| 149 | C8×C89 | — | 2 | 1 | no | — |
| 150 | C8×C89 | C2×#41 | 1 | 1 | yes | characteristic |
| 151 | C8×C89 | H(5,𝔽2) | 1 | 1 | yes | characteristic |
| 152 | C22×C89 | — | 8 | 1 | no | — |
| 153 | C22×C89 | — | 8 | 1 | no | — |
| 154 | C22×C89 | — | 8 | 1 | no | — |
| 155 | C22×C89 | C22×D8 | 1 | 1 | yes | characteristic |
| 156 | C4×C89 | — | 2 | 2 | no | — |
| 157 | C4×C89 | — | 2 | 2 | no | — |
| 158 | C4×C89 | — | 2 | 1 | no | — |
| 159 | C4×C89 | — | 8 | 2 | no | — |
| 160 | C4×C89 | — | 8 | 1 | no | — |
| 161 | C4×C89 | #510 | 1 | 2 | yes | — |
| 162 | C4×C89 | #550 | 1 | 1 | yes | characteristic |
| 163 | C4×C89 | #576 | 1 | 1 | yes | characteristic |
| 164 | Dic89 | — | 8 | 1 | no | — |
| 165 | Dic89 | — | 8 | 2 | no | — |
| 166 | Dic89 | — | 8 | 1 | no | — |
| 167 | #33965 | — | 89 | 1 | no | maximal, Sylow |
| 168 | C2×C89 | — | 16 | 1 | no | — |
| 169 | C2×C89 | #3391 | 1 | 1 | yes | characteristic |
| 170 | C2×C89 | C2×#510 | 1 | 1 | yes | characteristic |
| 171 | C2×C89 | #3417 | 1 | 1 | yes | characteristic |
| 172 | #3395 | — | 89 | 1 | no | — |
| 173 | #3393 | D89 | 1 | 1 | yes | characteristic |
| 174 | #2251 | — | 89 | 2 | no | — |
| 175 | #2247 | — | 89 | 1 | no | — |
| 176 | #2211 | — | 89 | 2 | no | — |
| 177 | #2209 | — | 89 | 1 | no | — |
| 178 | #2209 | — | 89 | 2 | no | — |
| 179 | #2208 | — | 89 | 1 | no | — |
| 180 | #2183 | — | 89 | 1 | no | — |
| 181 | #2176 | — | 89 | 2 | no | — |
| 182 | C4×SD32 | — | 89 | 1 | no | — |
| 183 | C89 | #33965 | 1 | 1 | yes | characteristic, complemented, Sylow |
| 184 | #557 | — | 178 | 1 | no | — |
| 185 | #556 | — | 2 | 1 | no | — |
| 186 | C2×Q32 | — | 89 | 2 | no | — |
| 187 | C2×Q32 | — | 89 | 2 | no | — |
| 188 | C2×Q32 | — | 89 | 2 | no | — |
| 189 | C2×SD32 | — | 89 | 2 | no | — |
| 190 | C2×SD32 | — | 89 | 1 | no | — |
| 191 | #495 | C2×D89 | 1 | 2 | yes | — |
| 192 | #494 | — | 89 | 1 | no | — |
| 193 | #494 | — | 89 | 2 | no | — |
| 194 | #494 | C2×D89 | 1 | 1 | yes | characteristic |
| 195 | #464 | — | 2 | 2 | no | — |
| 196 | #462 | — | 178 | 1 | no | — |
| 197 | #462 | — | 178 | 2 | no | — |
| 198 | #461 | — | 2 | 1 | no | — |
| 199 | C8×Q8 | C2×D89 | 1 | 1 | yes | characteristic |
| 200 | C4×Q16 | — | 89 | 1 | no | — |
| 201 | C4×Q16 | — | 89 | 2 | no | — |
| 202 | C4×Q16 | C2×D89 | 1 | 2 | yes | — |
| 203 | C4×D8 | C2×D89 | 1 | 1 | yes | characteristic |
| 204 | #367 | — | 89 | 1 | no | — |
| 205 | C4⋊C16 | — | 89 | 1 | no | — |
| 206 | C4⋊C16 | — | 89 | 2 | no | — |
| 207 | #358 | — | 89 | 2 | no | — |
| 208 | #358 | — | 89 | 1 | no | — |
| 209 | #358 | — | 89 | 2 | no | — |
| 210 | #357 | — | 89 | 1 | no | — |
| 211 | #346 | — | 89 | 2 | no | — |
| 212 | C4×C16 | — | 89 | 1 | no | — |
| 213 | C2×Q16 | — | 2 | 1 | no | — |
| 214 | C2×Q16 | — | 89 | 1 | no | — |
| 215 | C2×Q16 | — | 89 | 2 | no | — |
| 216 | C2×Q16 | — | 178 | 1 | no | — |
| 217 | C2×Q16 | — | 178 | 2 | no | — |
| 218 | C2×Q16 | C22×D89 | 1 | 2 | yes | — |
| 219 | C2×SD16 | — | 2 | 2 | no | — |
| 220 | C2×D8 | C22×D89 | 1 | 1 | yes | characteristic |
| 221 | C4⋊Q8 | — | 2 | 1 | no | — |
| 222 | C4⋊Q8 | — | 178 | 1 | no | — |
| 223 | C4⋊Q8 | — | 178 | 2 | no | — |
| 224 | #126 | — | 4 | 2 | no | — |
| 225 | #125 | — | 356 | 1 | no | — |
| 226 | #125 | — | 356 | 2 | no | — |
| 227 | #124 | — | 2 | 2 | no | — |
| 228 | C22⋊Q8 | — | 4 | 1 | no | — |
| 229 | C4×Q8 | — | 2 | 2 | no | — |
| 230 | C4×Q8 | — | 356 | 1 | no | — |
| 231 | C4×Q8 | — | 178 | 1 | no | — |
| 232 | C4×Q8 | — | 178 | 2 | no | — |
| 233 | C4×Q8 | C22⋊D89 | 1 | 1 | yes | characteristic |
| 234 | C4×D4 | — | 2 | 1 | no | — |
| 235 | #117 | — | 4 | 1 | no | — |
| 236 | Q32 | — | 356 | 2 | no | — |
| 237 | Q32 | — | 356 | 2 | no | — |
| 238 | Q32 | — | 178 | 4 | no | — |
| 239 | SD32 | — | 356 | 2 | no | — |
| 240 | SD32 | — | 178 | 2 | no | — |
| 241 | C2×C16 | — | 89 | 1 | no | — |
| 242 | C2×C16 | — | 89 | 1 | no | — |
| 243 | C2×C16 | — | 89 | 2 | no | — |
| 244 | #107 | — | 89 | 1 | no | — |
| 245 | #107 | C22×D89 | 1 | 1 | yes | characteristic |
| 246 | C4⋊C8 | C22⋊D89 | 1 | 1 | yes | characteristic |
| 247 | C4⋊C8 | C22⋊D89 | 1 | 2 | yes | — |
| 248 | #103 | — | 2 | 2 | no | — |
| 249 | #103 | — | 178 | 1 | no | — |
| 250 | #103 | — | 178 | 2 | no | — |
| 251 | #102 | — | 2 | 1 | no | — |
| 252 | C4×C8 | C22×D89 | 1 | 1 | yes | characteristic |
| 253 | C4×C8 | C22×D89 | 1 | 2 | yes | — |
| 254 | C2×Q8 | — | 2 | 2 | no | — |
| 255 | C2×Q8 | — | 178 | 1 | no | — |
| 256 | C2×Q8 | — | 178 | 2 | no | — |
| 257 | C2×Q8 | #13083559 | 1 | 1 | yes | characteristic |
| 258 | C2×D4 | — | 2 | 1 | no | — |
| 259 | C22×C4 | — | 4 | 1 | no | — |
| 260 | Q16 | — | 2 | 2 | no | — |
| 261 | Q16 | — | 2 | 2 | no | — |
| 262 | Q16 | — | 8 | 1 | no | — |
| 263 | Q16 | — | 178 | 1 | no | — |
| 264 | Q16 | — | 178 | 2 | no | — |
| 265 | Q16 | — | 178 | 2 | no | — |
| 266 | Q16 | — | 178 | 1 | no | — |
| 267 | Q16 | — | 712 | 2 | no | — |
| 268 | Q16 | — | 712 | 1 | no | — |
| 269 | SD16 | — | 8 | 2 | no | — |
| 270 | D8 | — | 2 | 1 | no | — |
| 271 | D8 | — | 2 | 1 | no | — |
| 272 | C2×C8 | C2×C22⋊D89 | 1 | 1 | yes | characteristic |
| 273 | C2×C8 | C2×C22⋊D89 | 1 | 2 | yes | — |
| 274 | C2×C8 | C23×D89 | 1 | 1 | yes | characteristic |
| 275 | C4⋊C4 | — | 2 | 1 | no | — |
| 276 | C4⋊C4 | — | 4 | 1 | no | — |
| 277 | C4⋊C4 | — | 4 | 2 | no | — |
| 278 | C4⋊C4 | — | 4 | 1 | no | — |
| 279 | C4⋊C4 | — | 356 | 2 | no | — |
| 280 | C4⋊C4 | — | 356 | 1 | no | — |
| 281 | C4⋊C4 | — | 356 | 2 | no | — |
| 282 | C4⋊C4 | — | 356 | 1 | no | — |
| 283 | C4⋊C4 | — | 356 | 2 | no | — |
| 284 | C4⋊C4 | — | 356 | 1 | no | — |
| 285 | C4⋊C4 | — | 178 | 1 | no | — |
| 286 | C4⋊C4 | #13083559 | 1 | 1 | yes | characteristic |
| 287 | C4⋊C4 | #13083559 | 1 | 2 | yes | — |
| 288 | C22⋊C4 | — | 4 | 2 | no | — |
| 289 | C22⋊C4 | — | 4 | 1 | no | — |
| 290 | C22⋊C4 | — | 4 | 2 | no | — |
| 291 | C42 | — | 4 | 2 | no | — |
| 292 | C42 | — | 356 | 2 | no | — |
| 293 | C42 | — | 356 | 1 | no | — |
| 294 | C42 | C2×C22⋊D89 | 1 | 1 | yes | characteristic |
| 295 | C42 | C2×C22⋊D89 | 1 | 2 | yes | — |
| 296 | C16 | — | 89 | 2 | no | — |
| 297 | C16 | — | 178 | 2 | no | — |
| 298 | C16 | — | 178 | 1 | no | — |
| 299 | C23 | — | 4 | 1 | no | — |
| 300 | Q8 | — | 2 | 2 | no | — |
| 301 | Q8 | — | 4 | 2 | no | — |
| 302 | Q8 | — | 4 | 2 | no | — |
| 303 | Q8 | — | 356 | 1 | no | — |
| 304 | Q8 | — | 356 | 2 | no | — |
| 305 | Q8 | — | 356 | 1 | no | — |
| 306 | Q8 | — | 356 | 2 | no | — |
| 307 | D4 | — | 4 | 1 | no | — |
| 308 | D4 | — | 4 | 1 | no | — |
| 309 | C2×C4 | — | 4 | 1 | no | — |
| 310 | C2×C4 | — | 4 | 2 | no | — |
| 311 | C2×C4 | — | 8 | 2 | no | — |
| 312 | C2×C4 | — | 356 | 1 | no | — |
| 313 | C2×C4 | — | 356 | 2 | no | — |
| 314 | C2×C4 | — | 356 | 1 | no | — |
| 315 | C2×C4 | C2×#13083559 | 1 | 2 | yes | — |
| 316 | C2×C4 | C2×#13083559 | 1 | 2 | yes | — |
| 317 | C2×C4 | C2×#13083559 | 1 | 1 | yes | characteristic |
| 318 | C2×C4 | C2×#13083559 | 1 | 1 | yes | characteristic |
| 319 | C2×C4 | C22×C22⋊D89 | 1 | 1 | yes | characteristic |
| 320 | C8 | — | 2 | 2 | no | — |
| 321 | C8 | — | 2 | 1 | no | — |
| 322 | C8 | #41×D89 | 1 | 1 | yes | characteristic |
| 323 | C8 | #15668058 | 1 | 1 | yes | characteristic |
| 324 | C22 | — | 8 | 1 | no | — |
| 325 | C22 | — | 8 | 1 | no | — |
| 326 | C22 | — | 8 | 1 | no | — |
| 327 | C22 | C22×#13083559 | 1 | 1 | yes | characteristic |
| 328 | C4 | — | 2 | 2 | no | — |
| 329 | C4 | — | 2 | 2 | no | — |
| 330 | C4 | — | 2 | 1 | no | — |
| 331 | C4 | — | 8 | 2 | no | — |
| 332 | C4 | — | 8 | 1 | no | — |
| 333 | C4 | — | 712 | 1 | no | — |
| 334 | C4 | — | 712 | 2 | no | — |
| 335 | C4 | — | 712 | 1 | no | — |
| 336 | C4 | #19152038 | 1 | 2 | yes | — |
| 337 | C4 | #19152267 | 1 | 1 | yes | characteristic |
| 338 | C4 | #19152401 | 1 | 1 | yes | characteristic |
| 339 | C2 | — | 16 | 1 | no | — |
| 340 | C2 | #26033224 | 1 | 1 | yes | characteristic |
| 341 | C2 | C2×#19152038 | 1 | 1 | yes | characteristic |
| 342 | C2 | #26033403 | 1 | 1 | yes | characteristic |
Complements
Splittings G = N ⋊ H with N normal; H ≅ G/N.
Maximal subgroups
By isomorphism type — maximal subgroups of the same type appear once, whether or not they are normal.
Finite Group Databasebeta