Extensions 1→N→G→Q→1 with N=C2 and Q=D4.4D4

Direct product G=N×Q with N=C2 and Q=D4.4D4
dρLabelID
C2×D4.4D432C2xD4.4D4128,1797


Non-split extensions G=N.Q with N=C2 and Q=D4.4D4
extensionφ:Q→Aut NdρLabelID
C2.1(D4.4D4) = C4○D4.5Q8central extension (φ=1)64C2.1(D4.4D4)128,548
C2.2(D4.4D4) = M4(2).48D4central extension (φ=1)32C2.2(D4.4D4)128,639
C2.3(D4.4D4) = C4.D43C4central extension (φ=1)32C2.3(D4.4D4)128,663
C2.4(D4.4D4) = M4(2).6Q8central extension (φ=1)64C2.4(D4.4D4)128,684
C2.5(D4.4D4) = M4(2).32D4central extension (φ=1)32C2.5(D4.4D4)128,710
C2.6(D4.4D4) = C87D8central stem extension (φ=1)64C2.6(D4.4D4)128,399
C2.7(D4.4D4) = C813SD16central stem extension (φ=1)64C2.7(D4.4D4)128,400
C2.8(D4.4D4) = D4.1Q16central stem extension (φ=1)64C2.8(D4.4D4)128,407
C2.9(D4.4D4) = Q8.1Q16central stem extension (φ=1)128C2.9(D4.4D4)128,408
C2.10(D4.4D4) = D4.2SD16central stem extension (φ=1)64C2.10(D4.4D4)128,409
C2.11(D4.4D4) = Q8.2SD16central stem extension (φ=1)64C2.11(D4.4D4)128,410
C2.12(D4.4D4) = C82D8central stem extension (φ=1)64C2.12(D4.4D4)128,419
C2.13(D4.4D4) = C82SD16central stem extension (φ=1)64C2.13(D4.4D4)128,420
C2.14(D4.4D4) = C8.8SD16central stem extension (φ=1)64C2.14(D4.4D4)128,427
C2.15(D4.4D4) = C8.3Q16central stem extension (φ=1)128C2.15(D4.4D4)128,428
C2.16(D4.4D4) = C42.248C23central stem extension (φ=1)64C2.16(D4.4D4)128,429
C2.17(D4.4D4) = C42.249C23central stem extension (φ=1)64C2.17(D4.4D4)128,430
C2.18(D4.4D4) = M4(2).4D4central stem extension (φ=1)32C2.18(D4.4D4)128,750
C2.19(D4.4D4) = C4⋊C4.96D4central stem extension (φ=1)32C2.19(D4.4D4)128,777
C2.20(D4.4D4) = M4(2).10D4central stem extension (φ=1)32C2.20(D4.4D4)128,783
C2.21(D4.4D4) = M4(2).12D4central stem extension (φ=1)32C2.21(D4.4D4)128,795
C2.22(D4.4D4) = (C2×C8).55D4central stem extension (φ=1)64C2.22(D4.4D4)128,810
C2.23(D4.4D4) = M4(2).Q8central stem extension (φ=1)64C2.23(D4.4D4)128,821

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