Extensions 1→N→G→Q→1 with N=D12 and Q=C2

Direct product G=N×Q with N=D12 and Q=C2
dρLabelID
C2×D1224C2xD1248,36

Semidirect products G=N:Q with N=D12 and Q=C2
extensionφ:Q→Out NdρLabelID
D121C2 = D24φ: C2/C1C2 ⊆ Out D12242+D12:1C248,7
D122C2 = D4⋊S3φ: C2/C1C2 ⊆ Out D12244+D12:2C248,15
D123C2 = S3×D4φ: C2/C1C2 ⊆ Out D12124+D12:3C248,38
D124C2 = Q83S3φ: C2/C1C2 ⊆ Out D12244+D12:4C248,41
D125C2 = C4○D12φ: trivial image242D12:5C248,37

Non-split extensions G=N.Q with N=D12 and Q=C2
extensionφ:Q→Out NdρLabelID
D12.1C2 = C24⋊C2φ: C2/C1C2 ⊆ Out D12242D12.1C248,6
D12.2C2 = Q82S3φ: C2/C1C2 ⊆ Out D12244+D12.2C248,17

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