Extensions 1→N→G→Q→1 with N=C12 and Q=C2

Direct product G=N×Q with N=C12 and Q=C2
dρLabelID
C2×C1224C2xC1224,9

Semidirect products G=N:Q with N=C12 and Q=C2
extensionφ:Q→Aut NdρLabelID
C121C2 = D12φ: C2/C1C2 ⊆ Aut C12122+C12:1C224,6
C122C2 = C4×S3φ: C2/C1C2 ⊆ Aut C12122C12:2C224,5
C123C2 = C3×D4φ: C2/C1C2 ⊆ Aut C12122C12:3C224,10

Non-split extensions G=N.Q with N=C12 and Q=C2
extensionφ:Q→Aut NdρLabelID
C12.1C2 = Dic6φ: C2/C1C2 ⊆ Aut C12242-C12.1C224,4
C12.2C2 = C3⋊C8φ: C2/C1C2 ⊆ Aut C12242C12.2C224,1
C12.3C2 = C3×Q8φ: C2/C1C2 ⊆ Aut C12242C12.3C224,11

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