| extension | φ:Q→Aut N | d | ρ | Label | ID |
|---|
| C2.1(C12:7D4) = C12:4(C4:C4) | central extension (φ=1) | 192 | | C2.1(C12:7D4) | 192,487 |
| C2.2(C12:7D4) = (C2xC4):6D12 | central extension (φ=1) | 96 | | C2.2(C12:7D4) | 192,498 |
| C2.3(C12:7D4) = (C2xC42):3S3 | central extension (φ=1) | 96 | | C2.3(C12:7D4) | 192,499 |
| C2.4(C12:7D4) = C24.75D6 | central extension (φ=1) | 96 | | C2.4(C12:7D4) | 192,771 |
| C2.5(C12:7D4) = C24.76D6 | central extension (φ=1) | 96 | | C2.5(C12:7D4) | 192,772 |
| C2.6(C12:7D4) = C24.21D6 | central stem extension (φ=1) | 96 | | C2.6(C12:7D4) | 192,512 |
| C2.7(C12:7D4) = C23:3D12 | central stem extension (φ=1) | 96 | | C2.7(C12:7D4) | 192,519 |
| C2.8(C12:7D4) = C24.27D6 | central stem extension (φ=1) | 96 | | C2.8(C12:7D4) | 192,520 |
| C2.9(C12:7D4) = (C2xC4).44D12 | central stem extension (φ=1) | 192 | | C2.9(C12:7D4) | 192,540 |
| C2.10(C12:7D4) = (C2xC4):3D12 | central stem extension (φ=1) | 96 | | C2.10(C12:7D4) | 192,550 |
| C2.11(C12:7D4) = (C2xC12).56D4 | central stem extension (φ=1) | 96 | | C2.11(C12:7D4) | 192,553 |
| C2.12(C12:7D4) = C12:7D8 | central stem extension (φ=1) | 96 | | C2.12(C12:7D4) | 192,574 |
| C2.13(C12:7D4) = D4.1D12 | central stem extension (φ=1) | 96 | | C2.13(C12:7D4) | 192,575 |
| C2.14(C12:7D4) = D4.2D12 | central stem extension (φ=1) | 96 | | C2.14(C12:7D4) | 192,578 |
| C2.15(C12:7D4) = Q8:2D12 | central stem extension (φ=1) | 96 | | C2.15(C12:7D4) | 192,586 |
| C2.16(C12:7D4) = Q8.6D12 | central stem extension (φ=1) | 96 | | C2.16(C12:7D4) | 192,587 |
| C2.17(C12:7D4) = C12:7Q16 | central stem extension (φ=1) | 192 | | C2.17(C12:7D4) | 192,590 |
| C2.18(C12:7D4) = C24:30D4 | central stem extension (φ=1) | 96 | | C2.18(C12:7D4) | 192,673 |
| C2.19(C12:7D4) = C24:29D4 | central stem extension (φ=1) | 96 | | C2.19(C12:7D4) | 192,674 |
| C2.20(C12:7D4) = C24.82D4 | central stem extension (φ=1) | 96 | | C2.20(C12:7D4) | 192,675 |
| C2.21(C12:7D4) = C24:2D4 | central stem extension (φ=1) | 96 | | C2.21(C12:7D4) | 192,693 |
| C2.22(C12:7D4) = C24:3D4 | central stem extension (φ=1) | 96 | | C2.22(C12:7D4) | 192,694 |
| C2.23(C12:7D4) = C24.4D4 | central stem extension (φ=1) | 96 | | C2.23(C12:7D4) | 192,696 |
| C2.24(C12:7D4) = Q8.8D12 | central stem extension (φ=1) | 48 | 4 | C2.24(C12:7D4) | 192,700 |
| C2.25(C12:7D4) = Q8.9D12 | central stem extension (φ=1) | 48 | 4+ | C2.25(C12:7D4) | 192,701 |
| C2.26(C12:7D4) = Q8.10D12 | central stem extension (φ=1) | 96 | 4- | C2.26(C12:7D4) | 192,702 |