Extensions 1→N→G→Q→1 with N=C₃ and Q=C₃×C₂₁

Direct product G=N×Q with N=C₃ and Q=C₃×C₂₁

		d	ρ	Label	ID
C₃²×C₂₁		189		C3^2xC21	189,13

Non-split extensions G=N.Q with N=C₃ and Q=C₃×C₂₁

extension	φ:Q→Aut N	d	ρ	Label	ID
C₃.₁(C₃×C₂₁) = C₇×He₃	central stem extension (φ=1)	63	3	C3.1(C3xC21)	189,10
C₃.₂(C₃×C₂₁) = C₇×3_-¹⁺²	central stem extension (φ=1)	63	3	C3.2(C3xC21)	189,11

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Extensions 1→N→G→Q→1 with N=C3 and Q=C3×C21