| 1 | #3141×C139 | C2 | 1 | 1 | yes | maximal, characteristic |
| 2 | #2979×C139 | C2 | 1 | 1 | yes | maximal, characteristic |
| 3 | #1560×C139 | C2 | 1 | 1 | yes | maximal, characteristic |
| 4 | #1548×C139 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 5 | #1546×C139 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 6 | #1299×C139 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 7 | #1299×C139 | C2 | 1 | 1 | yes | maximal, characteristic, complemented |
| 8 | #532×C139 | C22 | 1 | 1 | yes | characteristic |
| 9 | C2×C4⋊Q8×C139 | C22 | 1 | 1 | yes | characteristic |
| 10 | #489×C139 | C4 | 1 | 4 | yes | — |
| 11 | #487×C139 | — | 2 | 1 | no | — |
| 12 | #486×C139 | — | 2 | 1 | no | — |
| 13 | #436×C139 | — | 2 | 1 | no | — |
| 14 | #436×C139 | — | 2 | 1 | no | — |
| 15 | C8×D4×C139 | — | 2 | 1 | no | — |
| 16 | C8×D4×C139 | — | 2 | 1 | no | — |
| 17 | #431×C139 | C22 | 1 | 1 | yes | characteristic |
| 18 | #431×C139 | C22 | 1 | 1 | yes | characteristic |
| 19 | #423×C139 | C22 | 1 | 1 | yes | characteristic |
| 20 | #423×C139 | C22 | 1 | 1 | yes | characteristic |
| 21 | #417×C139 | — | 2 | 2 | no | — |
| 22 | #408×C139 | — | 2 | 2 | no | — |
| 23 | C4×M16×C139 | C22 | 1 | 1 | yes | characteristic |
| 24 | #333×C139 | — | 2 | 1 | no | — |
| 25 | #333×C139 | — | 2 | 1 | no | — |
| 26 | #333×C139 | — | 2 | 1 | no | — |
| 27 | #332×C139 | — | 2 | 1 | no | — |
| 28 | #332×C139 | — | 2 | 1 | no | — |
| 29 | #331×C139 | — | 2 | 1 | no | — |
| 30 | C2×#41×C139 | D4 | 1 | 2 | yes | — |
| 31 | C22×Q8×C139 | — | 2 | 1 | no | — |
| 32 | C2×M16×C139 | — | 2 | 1 | no | — |
| 33 | C2×M16×C139 | — | 2 | 2 | no | — |
| 34 | C2×M16×C139 | — | 2 | 1 | no | — |
| 35 | C2×M16×C139 | — | 2 | 1 | no | — |
| 36 | C22×C8×C139 | — | 2 | 2 | no | — |
| 37 | C4⋊Q8×C139 | — | 2 | 1 | no | — |
| 38 | C4⋊Q8×C139 | — | 2 | 1 | no | — |
| 39 | C4⋊Q8×C139 | — | 2 | 1 | no | — |
| 40 | C4⋊Q8×C139 | C2×C4 | 1 | 2 | yes | — |
| 41 | C4⋊Q8×C139 | D4 | 1 | 1 | yes | characteristic |
| 42 | #127×C139 | D4 | 1 | 1 | yes | characteristic |
| 43 | #124×C139 | C2×C4 | 1 | 2 | yes | — |
| 44 | #121×C139 | — | 2 | 1 | no | — |
| 45 | #121×C139 | — | 2 | 1 | no | — |
| 46 | C4×D4×C139 | — | 2 | 1 | no | — |
| 47 | C4×D4×C139 | — | 2 | 1 | no | — |
| 48 | C2×C4⋊C4×C139 | — | 2 | 1 | no | — |
| 49 | C2×C4⋊C4×C139 | — | 2 | 1 | no | — |
| 50 | C2×C42×C139 | C23 | 1 | 1 | yes | characteristic |
| 51 | C4⋊C8×C139 | — | 2 | 1 | no | — |
| 52 | C4⋊C8×C139 | — | 2 | 1 | no | — |
| 53 | C4⋊C8×C139 | — | 2 | 1 | no | — |
| 54 | C4⋊C8×C139 | — | 2 | 1 | no | — |
| 55 | C4⋊C8×C139 | D4 | 1 | 1 | yes | characteristic |
| 56 | C4⋊C8×C139 | D4 | 1 | 1 | yes | characteristic |
| 57 | C4⋊C8×C139 | D4 | 1 | 1 | yes | characteristic |
| 58 | C4⋊C8×C139 | D4 | 1 | 1 | yes | characteristic |
| 59 | #103×C139 | — | 2 | 4 | no | — |
| 60 | #102×C139 | — | 2 | 4 | no | — |
| 61 | C22⋊C8×C139 | — | 2 | 2 | no | — |
| 62 | C22⋊C8×C139 | — | 2 | 2 | no | — |
| 63 | C22⋊C8×C139 | — | 2 | 1 | no | — |
| 64 | C22⋊C8×C139 | — | 2 | 1 | no | — |
| 65 | #97×C139 | C2×C4 | 1 | 2 | yes | — |
| 66 | C4×C8×C139 | — | 2 | 1 | no | — |
| 67 | C4×C8×C139 | — | 2 | 1 | no | — |
| 68 | C4×C8×C139 | — | 2 | 1 | no | — |
| 69 | #41×C139 | — | 4 | 2 | no | — |
| 70 | #41×C139 | — | 4 | 2 | no | — |
| 71 | C2×Q8×C139 | — | 2 | 2 | no | — |
| 72 | C2×Q8×C139 | — | 4 | 1 | no | — |
| 73 | C2×Q8×C139 | — | 8 | 1 | no | — |
| 74 | C2×Q8×C139 | — | 8 | 1 | no | — |
| 75 | C2×Q8×C139 | C22⋊C4 | 1 | 2 | yes | — |
| 76 | C2×D4×C139 | — | 2 | 2 | no | — |
| 77 | C2×D4×C139 | — | 2 | 1 | no | — |
| 78 | C2×D4×C139 | — | 2 | 1 | no | — |
| 79 | C2×D4×C139 | C22⋊C4 | 1 | 2 | yes | — |
| 80 | C22×C4×C139 | — | 2 | 2 | no | — |
| 81 | C22×C4×C139 | — | 4 | 1 | no | — |
| 82 | C22×C4×C139 | C2×D4 | 1 | 1 | yes | characteristic |
| 83 | C22×C4×C139 | #41 | 1 | 1 | yes | characteristic |
| 84 | C22×C4×C139 | #41 | 1 | 1 | yes | characteristic |
| 85 | M16×C139 | — | 4 | 1 | no | — |
| 86 | M16×C139 | — | 4 | 1 | no | — |
| 87 | M16×C139 | — | 8 | 2 | no | — |
| 88 | M16×C139 | — | 8 | 1 | no | — |
| 89 | M16×C139 | — | 8 | 1 | no | — |
| 90 | C2×C8×C139 | — | 2 | 2 | no | — |
| 91 | C2×C8×C139 | — | 2 | 1 | no | — |
| 92 | C2×C8×C139 | — | 2 | 1 | no | — |
| 93 | C2×C8×C139 | — | 2 | 1 | no | — |
| 94 | C2×C8×C139 | — | 2 | 1 | no | — |
| 95 | C2×C8×C139 | — | 4 | 1 | no | — |
| 96 | C2×C8×C139 | — | 4 | 1 | no | — |
| 97 | C2×C8×C139 | — | 8 | 2 | no | — |
| 98 | C4⋊C4×C139 | — | 2 | 1 | no | — |
| 99 | C4⋊C4×C139 | — | 2 | 1 | no | — |
| 100 | C4⋊C4×C139 | — | 2 | 2 | no | — |
| 101 | C4⋊C4×C139 | — | 2 | 2 | no | — |
| 102 | C4⋊C4×C139 | — | 4 | 1 | no | — |
| 103 | C4⋊C4×C139 | — | 4 | 1 | no | — |
| 104 | C22⋊C4×C139 | — | 2 | 2 | no | — |
| 105 | C22⋊C4×C139 | — | 2 | 2 | no | — |
| 106 | C42×C139 | C22×C4 | 1 | 1 | yes | characteristic |
| 107 | C42×C139 | C2×D4 | 1 | 1 | yes | characteristic |
| 108 | C42×C139 | C2×D4 | 1 | 1 | yes | characteristic |
| 109 | C42×C139 | C2×D4 | 1 | 1 | yes | characteristic |
| 110 | C23×C139 | — | 2 | 2 | no | — |
| 111 | C23×C139 | #123 | 1 | 1 | yes | characteristic |
| 112 | Q8×C139 | — | 4 | 2 | no | — |
| 113 | Q8×C139 | — | 8 | 2 | no | — |
| 114 | Q8×C139 | — | 8 | 1 | no | — |
| 115 | Q8×C139 | — | 8 | 1 | no | — |
| 116 | D4×C139 | — | 4 | 2 | no | — |
| 117 | D4×C139 | — | 4 | 1 | no | — |
| 118 | D4×C139 | — | 4 | 1 | no | — |
| 119 | D4×C139 | — | 4 | 1 | no | — |
| 120 | D4×C139 | — | 4 | 1 | no | — |
| 121 | D4×C139 | — | 8 | 2 | no | — |
| 122 | C2×C4×C139 | — | 2 | 1 | no | — |
| 123 | C2×C4×C139 | — | 2 | 1 | no | — |
| 124 | C2×C4×C139 | — | 2 | 1 | no | — |
| 125 | C2×C4×C139 | — | 2 | 1 | no | — |
| 126 | C2×C4×C139 | — | 2 | 1 | no | — |
| 127 | C2×C4×C139 | — | 2 | 1 | no | — |
| 128 | C2×C4×C139 | — | 2 | 2 | no | — |
| 129 | C2×C4×C139 | — | 4 | 2 | no | — |
| 130 | C2×C4×C139 | — | 4 | 2 | no | — |
| 131 | C2×C4×C139 | — | 4 | 2 | no | — |
| 132 | C2×C4×C139 | — | 8 | 2 | no | — |
| 133 | C2×C4×C139 | C2×C22⋊C4 | 1 | 1 | yes | characteristic |
| 134 | C2×C4×C139 | C4×D4 | 1 | 1 | yes | characteristic |
| 135 | C2×C4×C139 | C4×D4 | 1 | 1 | yes | characteristic |
| 136 | C2×C4×C139 | #120 | 1 | 1 | yes | characteristic |
| 137 | C2×C4×C139 | #121 | 1 | 1 | yes | characteristic |
| 138 | C2×C4×C139 | #121 | 1 | 1 | yes | characteristic |
| 139 | C8×C139 | — | 4 | 2 | no | — |
| 140 | C8×C139 | — | 4 | 1 | no | — |
| 141 | C8×C139 | — | 4 | 1 | no | — |
| 142 | C8×C139 | — | 4 | 1 | no | — |
| 143 | C8×C139 | — | 4 | 1 | no | — |
| 144 | C8×C139 | — | 8 | 1 | no | — |
| 145 | C8×C139 | — | 8 | 1 | no | — |
| 146 | C22×C139 | — | 2 | 1 | no | — |
| 147 | C22×C139 | — | 2 | 1 | no | — |
| 148 | C22×C139 | — | 2 | 1 | no | — |
| 149 | C22×C139 | — | 4 | 2 | no | — |
| 150 | C22×C139 | — | 4 | 2 | no | — |
| 151 | C22×C139 | — | 4 | 2 | no | — |
| 152 | C22×C139 | #386 | 1 | 1 | yes | characteristic |
| 153 | C4×C139 | — | 2 | 1 | no | — |
| 154 | C4×C139 | — | 2 | 1 | no | — |
| 155 | C4×C139 | — | 2 | 1 | no | — |
| 156 | C4×C139 | — | 4 | 2 | no | — |
| 157 | C4×C139 | — | 8 | 2 | no | — |
| 158 | C4×C139 | #455 | 1 | 1 | yes | characteristic |
| 159 | C4×C139 | #455 | 1 | 1 | yes | characteristic |
| 160 | C4×C139 | #471 | 1 | 1 | yes | characteristic |
| 161 | C4×C139 | #471 | 1 | 1 | yes | characteristic |
| 162 | C4×C139 | #472 | 1 | 1 | yes | characteristic |
| 163 | C4×C139 | #473 | 1 | 1 | yes | characteristic |
| 164 | C2×C139 | — | 4 | 1 | no | — |
| 165 | C2×C139 | — | 8 | 2 | no | — |
| 166 | C2×C139 | #1885 | 1 | 1 | yes | characteristic |
| 167 | C2×C139 | #1907 | 1 | 1 | yes | characteristic |
| 168 | C2×C139 | #1908 | 1 | 1 | yes | characteristic |
| 169 | #9433 | C139 | 1 | 1 | yes | maximal, characteristic, direct product factor, Sylow |
| 170 | C139 | #9433 | 1 | 1 | yes | characteristic, direct product factor, Sylow |
| 171 | #3141 | C2×C139 | 1 | 1 | yes | characteristic |
| 172 | #2979 | C2×C139 | 1 | 1 | yes | characteristic |
| 173 | #1560 | C2×C139 | 1 | 1 | yes | characteristic |
| 174 | #1548 | C2×C139 | 1 | 1 | yes | characteristic, complemented |
| 175 | #1546 | C2×C139 | 1 | 1 | yes | characteristic, complemented |
| 176 | #1299 | C2×C139 | 1 | 1 | yes | characteristic, complemented |
| 177 | #1299 | C2×C139 | 1 | 1 | yes | characteristic, complemented |
| 178 | #532 | C22×C139 | 1 | 1 | yes | characteristic |
| 179 | C2×C4⋊Q8 | C22×C139 | 1 | 1 | yes | characteristic |
| 180 | #489 | C4×C139 | 1 | 4 | yes | — |
| 181 | #487 | — | 2 | 1 | no | — |
| 182 | #486 | — | 2 | 1 | no | — |
| 183 | #436 | — | 2 | 1 | no | — |
| 184 | #436 | — | 2 | 1 | no | — |
| 185 | C8×D4 | — | 2 | 1 | no | — |
| 186 | C8×D4 | — | 2 | 1 | no | — |
| 187 | #431 | C22×C139 | 1 | 1 | yes | characteristic |
| 188 | #431 | C22×C139 | 1 | 1 | yes | characteristic |
| 189 | #423 | C22×C139 | 1 | 1 | yes | characteristic |
| 190 | #423 | C22×C139 | 1 | 1 | yes | characteristic |
| 191 | #417 | — | 2 | 2 | no | — |
| 192 | #408 | — | 2 | 2 | no | — |
| 193 | C4×M16 | C22×C139 | 1 | 1 | yes | characteristic |
| 194 | #333 | — | 2 | 1 | no | — |
| 195 | #333 | — | 2 | 1 | no | — |
| 196 | #333 | — | 2 | 1 | no | — |
| 197 | #332 | — | 2 | 1 | no | — |
| 198 | #332 | — | 2 | 1 | no | — |
| 199 | #331 | — | 2 | 1 | no | — |
| 200 | C2×#41 | D4×C139 | 1 | 2 | yes | — |
| 201 | C22×Q8 | — | 2 | 1 | no | — |
| 202 | C2×M16 | — | 2 | 1 | no | — |
| 203 | C2×M16 | — | 2 | 2 | no | — |
| 204 | C2×M16 | — | 2 | 1 | no | — |
| 205 | C2×M16 | — | 2 | 1 | no | — |
| 206 | C22×C8 | — | 2 | 2 | no | — |
| 207 | C4⋊Q8 | — | 2 | 1 | no | — |
| 208 | C4⋊Q8 | — | 2 | 1 | no | — |
| 209 | C4⋊Q8 | — | 2 | 1 | no | — |
| 210 | C4⋊Q8 | C2×C4×C139 | 1 | 2 | yes | — |
| 211 | C4⋊Q8 | D4×C139 | 1 | 1 | yes | characteristic |
| 212 | #127 | D4×C139 | 1 | 1 | yes | characteristic |
| 213 | #124 | C2×C4×C139 | 1 | 2 | yes | — |
| 214 | #121 | — | 2 | 1 | no | — |
| 215 | #121 | — | 2 | 1 | no | — |
| 216 | C4×D4 | — | 2 | 1 | no | — |
| 217 | C4×D4 | — | 2 | 1 | no | — |
| 218 | C2×C4⋊C4 | — | 2 | 1 | no | — |
| 219 | C2×C4⋊C4 | — | 2 | 1 | no | — |
| 220 | C2×C42 | C23×C139 | 1 | 1 | yes | characteristic |
| 221 | C4⋊C8 | — | 2 | 1 | no | — |
| 222 | C4⋊C8 | — | 2 | 1 | no | — |
| 223 | C4⋊C8 | — | 2 | 1 | no | — |
| 224 | C4⋊C8 | — | 2 | 1 | no | — |
| 225 | C4⋊C8 | D4×C139 | 1 | 1 | yes | characteristic |
| 226 | C4⋊C8 | D4×C139 | 1 | 1 | yes | characteristic |
| 227 | C4⋊C8 | D4×C139 | 1 | 1 | yes | characteristic |
| 228 | C4⋊C8 | D4×C139 | 1 | 1 | yes | characteristic |
| 229 | #103 | — | 2 | 4 | no | — |
| 230 | #102 | — | 2 | 4 | no | — |
| 231 | C22⋊C8 | — | 2 | 2 | no | — |
| 232 | C22⋊C8 | — | 2 | 2 | no | — |
| 233 | C22⋊C8 | — | 2 | 1 | no | — |
| 234 | C22⋊C8 | — | 2 | 1 | no | — |
| 235 | #97 | C2×C4×C139 | 1 | 2 | yes | — |
| 236 | C4×C8 | — | 2 | 1 | no | — |
| 237 | C4×C8 | — | 2 | 1 | no | — |
| 238 | C4×C8 | — | 2 | 1 | no | — |
| 239 | #41 | — | 4 | 2 | no | — |
| 240 | #41 | — | 4 | 2 | no | — |
| 241 | C2×Q8 | — | 2 | 2 | no | — |
| 242 | C2×Q8 | — | 4 | 1 | no | — |
| 243 | C2×Q8 | — | 8 | 1 | no | — |
| 244 | C2×Q8 | — | 8 | 1 | no | — |
| 245 | C2×Q8 | C22⋊C4×C139 | 1 | 2 | yes | — |
| 246 | C2×D4 | — | 2 | 2 | no | — |
| 247 | C2×D4 | — | 2 | 1 | no | — |
| 248 | C2×D4 | — | 2 | 1 | no | — |
| 249 | C2×D4 | C22⋊C4×C139 | 1 | 2 | yes | — |
| 250 | C22×C4 | — | 2 | 2 | no | — |
| 251 | C22×C4 | — | 4 | 1 | no | — |
| 252 | C22×C4 | C2×D4×C139 | 1 | 1 | yes | characteristic |
| 253 | C22×C4 | #41×C139 | 1 | 1 | yes | characteristic |
| 254 | C22×C4 | #41×C139 | 1 | 1 | yes | characteristic |
| 255 | M16 | — | 4 | 1 | no | — |
| 256 | M16 | — | 4 | 1 | no | — |
| 257 | M16 | — | 8 | 2 | no | — |
| 258 | M16 | — | 8 | 1 | no | — |
| 259 | M16 | — | 8 | 1 | no | — |
| 260 | C2×C8 | — | 2 | 2 | no | — |
| 261 | C2×C8 | — | 2 | 1 | no | — |
| 262 | C2×C8 | — | 2 | 1 | no | — |
| 263 | C2×C8 | — | 2 | 1 | no | — |
| 264 | C2×C8 | — | 2 | 1 | no | — |
| 265 | C2×C8 | — | 4 | 1 | no | — |
| 266 | C2×C8 | — | 4 | 1 | no | — |
| 267 | C2×C8 | — | 8 | 2 | no | — |
| 268 | C4⋊C4 | — | 2 | 1 | no | — |
| 269 | C4⋊C4 | — | 2 | 1 | no | — |
| 270 | C4⋊C4 | — | 2 | 2 | no | — |
| 271 | C4⋊C4 | — | 2 | 2 | no | — |
| 272 | C4⋊C4 | — | 4 | 1 | no | — |
| 273 | C4⋊C4 | — | 4 | 1 | no | — |
| 274 | C22⋊C4 | — | 2 | 2 | no | — |
| 275 | C22⋊C4 | — | 2 | 2 | no | — |
| 276 | C42 | C22×C4×C139 | 1 | 1 | yes | characteristic |
| 277 | C42 | C2×D4×C139 | 1 | 1 | yes | characteristic |
| 278 | C42 | C2×D4×C139 | 1 | 1 | yes | characteristic |
| 279 | C42 | C2×D4×C139 | 1 | 1 | yes | characteristic |
| 280 | C23 | — | 2 | 2 | no | — |
| 281 | C23 | #123×C139 | 1 | 1 | yes | characteristic |
| 282 | Q8 | — | 4 | 2 | no | — |
| 283 | Q8 | — | 8 | 2 | no | — |
| 284 | Q8 | — | 8 | 1 | no | — |
| 285 | Q8 | — | 8 | 1 | no | — |
| 286 | D4 | — | 4 | 2 | no | — |
| 287 | D4 | — | 4 | 1 | no | — |
| 288 | D4 | — | 4 | 1 | no | — |
| 289 | D4 | — | 4 | 1 | no | — |
| 290 | D4 | — | 4 | 1 | no | — |
| 291 | D4 | — | 8 | 2 | no | — |
| 292 | C2×C4 | — | 2 | 1 | no | — |
| 293 | C2×C4 | — | 2 | 1 | no | — |
| 294 | C2×C4 | — | 2 | 1 | no | — |
| 295 | C2×C4 | — | 2 | 1 | no | — |
| 296 | C2×C4 | — | 2 | 1 | no | — |
| 297 | C2×C4 | — | 2 | 1 | no | — |
| 298 | C2×C4 | — | 2 | 2 | no | — |
| 299 | C2×C4 | — | 4 | 2 | no | — |
| 300 | C2×C4 | — | 4 | 2 | no | — |
| 301 | C2×C4 | — | 4 | 2 | no | — |
| 302 | C2×C4 | — | 8 | 2 | no | — |
| 303 | C2×C4 | C2×C22⋊C4×C139 | 1 | 1 | yes | characteristic |
| 304 | C2×C4 | C4×D4×C139 | 1 | 1 | yes | characteristic |
| 305 | C2×C4 | C4×D4×C139 | 1 | 1 | yes | characteristic |
| 306 | C2×C4 | #120×C139 | 1 | 1 | yes | characteristic |
| 307 | C2×C4 | #121×C139 | 1 | 1 | yes | characteristic |
| 308 | C2×C4 | #121×C139 | 1 | 1 | yes | characteristic |
| 309 | C8 | — | 4 | 2 | no | — |
| 310 | C8 | — | 4 | 1 | no | — |
| 311 | C8 | — | 4 | 1 | no | — |
| 312 | C8 | — | 4 | 1 | no | — |
| 313 | C8 | — | 4 | 1 | no | — |
| 314 | C8 | — | 8 | 1 | no | — |
| 315 | C8 | — | 8 | 1 | no | — |
| 316 | C22 | — | 2 | 1 | no | — |
| 317 | C22 | — | 2 | 1 | no | — |
| 318 | C22 | — | 2 | 1 | no | — |
| 319 | C22 | — | 4 | 2 | no | — |
| 320 | C22 | — | 4 | 2 | no | — |
| 321 | C22 | — | 4 | 2 | no | — |
| 322 | C22 | #386×C139 | 1 | 1 | yes | characteristic |
| 323 | C4 | — | 2 | 1 | no | — |
| 324 | C4 | — | 2 | 1 | no | — |
| 325 | C4 | — | 2 | 1 | no | — |
| 326 | C4 | — | 4 | 2 | no | — |
| 327 | C4 | — | 8 | 2 | no | — |
| 328 | C4 | #455×C139 | 1 | 1 | yes | characteristic |
| 329 | C4 | #455×C139 | 1 | 1 | yes | characteristic |
| 330 | C4 | #471×C139 | 1 | 1 | yes | characteristic |
| 331 | C4 | #471×C139 | 1 | 1 | yes | characteristic |
| 332 | C4 | #472×C139 | 1 | 1 | yes | characteristic |
| 333 | C4 | #473×C139 | 1 | 1 | yes | characteristic |
| 334 | C2 | — | 4 | 1 | no | — |
| 335 | C2 | — | 8 | 2 | no | — |
| 336 | C2 | #1885×C139 | 1 | 1 | yes | characteristic |
| 337 | C2 | #1907×C139 | 1 | 1 | yes | characteristic |
| 338 | C2 | #1908×C139 | 1 | 1 | yes | characteristic |
Finite Group Databasebeta