| extension | φ:Q→Aut N | d | ρ | Label | ID |
|---|
| C2.1(D4xD7) = D7xC22:C4 | central extension (φ=1) | 56 | | C2.1(D4xD7) | 224,75 |
| C2.2(D4xD7) = Dic7:4D4 | central extension (φ=1) | 112 | | C2.2(D4xD7) | 224,76 |
| C2.3(D4xD7) = D7xC4:C4 | central extension (φ=1) | 112 | | C2.3(D4xD7) | 224,86 |
| C2.4(D4xD7) = D28:C4 | central extension (φ=1) | 112 | | C2.4(D4xD7) | 224,88 |
| C2.5(D4xD7) = D4xDic7 | central extension (φ=1) | 112 | | C2.5(D4xD7) | 224,129 |
| C2.6(D4xD7) = C22:Dic14 | central stem extension (φ=1) | 112 | | C2.6(D4xD7) | 224,73 |
| C2.7(D4xD7) = C22:D28 | central stem extension (φ=1) | 56 | | C2.7(D4xD7) | 224,77 |
| C2.8(D4xD7) = D14.D4 | central stem extension (φ=1) | 112 | | C2.8(D4xD7) | 224,78 |
| C2.9(D4xD7) = D14:D4 | central stem extension (φ=1) | 112 | | C2.9(D4xD7) | 224,79 |
| C2.10(D4xD7) = Dic7.D4 | central stem extension (φ=1) | 112 | | C2.10(D4xD7) | 224,80 |
| C2.11(D4xD7) = C28:Q8 | central stem extension (φ=1) | 224 | | C2.11(D4xD7) | 224,83 |
| C2.12(D4xD7) = D14.5D4 | central stem extension (φ=1) | 112 | | C2.12(D4xD7) | 224,89 |
| C2.13(D4xD7) = C4:D28 | central stem extension (φ=1) | 112 | | C2.13(D4xD7) | 224,90 |
| C2.14(D4xD7) = D14:Q8 | central stem extension (φ=1) | 112 | | C2.14(D4xD7) | 224,91 |
| C2.15(D4xD7) = D7xD8 | central stem extension (φ=1) | 56 | 4+ | C2.15(D4xD7) | 224,105 |
| C2.16(D4xD7) = D8:D7 | central stem extension (φ=1) | 56 | 4 | C2.16(D4xD7) | 224,106 |
| C2.17(D4xD7) = D8:3D7 | central stem extension (φ=1) | 112 | 4- | C2.17(D4xD7) | 224,107 |
| C2.18(D4xD7) = D7xSD16 | central stem extension (φ=1) | 56 | 4 | C2.18(D4xD7) | 224,108 |
| C2.19(D4xD7) = D56:C2 | central stem extension (φ=1) | 56 | 4+ | C2.19(D4xD7) | 224,109 |
| C2.20(D4xD7) = SD16:D7 | central stem extension (φ=1) | 112 | 4- | C2.20(D4xD7) | 224,110 |
| C2.21(D4xD7) = SD16:3D7 | central stem extension (φ=1) | 112 | 4 | C2.21(D4xD7) | 224,111 |
| C2.22(D4xD7) = D7xQ16 | central stem extension (φ=1) | 112 | 4- | C2.22(D4xD7) | 224,112 |
| C2.23(D4xD7) = Q16:D7 | central stem extension (φ=1) | 112 | 4 | C2.23(D4xD7) | 224,113 |
| C2.24(D4xD7) = Q8.D14 | central stem extension (φ=1) | 112 | 4+ | C2.24(D4xD7) | 224,114 |
| C2.25(D4xD7) = C23:D14 | central stem extension (φ=1) | 56 | | C2.25(D4xD7) | 224,132 |
| C2.26(D4xD7) = C28:2D4 | central stem extension (φ=1) | 112 | | C2.26(D4xD7) | 224,133 |
| C2.27(D4xD7) = Dic7:D4 | central stem extension (φ=1) | 112 | | C2.27(D4xD7) | 224,134 |
| C2.28(D4xD7) = C28:D4 | central stem extension (φ=1) | 112 | | C2.28(D4xD7) | 224,135 |