Extensions 1→N→G→Q→1 with N=C222 and Q=C2

Direct product G=N×Q with N=C222 and Q=C2
dρLabelID
C2×C222444C2xC222444,18

Semidirect products G=N:Q with N=C222 and Q=C2
extensionφ:Q→Aut NdρLabelID
C2221C2 = D222φ: C2/C1C2 ⊆ Aut C2222222+C222:1C2444,17
C2222C2 = C6×D37φ: C2/C1C2 ⊆ Aut C2222222C222:2C2444,15
C2223C2 = S3×C74φ: C2/C1C2 ⊆ Aut C2222222C222:3C2444,16

Non-split extensions G=N.Q with N=C222 and Q=C2
extensionφ:Q→Aut NdρLabelID
C222.1C2 = Dic111φ: C2/C1C2 ⊆ Aut C2224442-C222.1C2444,5
C222.2C2 = C3×Dic37φ: C2/C1C2 ⊆ Aut C2224442C222.2C2444,4
C222.3C2 = Dic3×C37φ: C2/C1C2 ⊆ Aut C2224442C222.3C2444,3

׿
×
𝔽