C20 SmallGroup(20, 2)

[20 7 3 2]: [f1, f2, f3, f1*f3, f2^2, f2^3, f2^4]
            [2, 3, 4, 6, 7, 11, 15]

[20 11 10 2]: [f1, f3, f1*f2, f1*f3, f1*f2^2, f1*f2*f3, f1*f2^3, f1*f2^2*f3, f1*f2^4, f1*f2^3*f3, f1*f2^4*f3]
              [2, 4, 5, 6, 9, 10, 13, 14, 17, 18, 20]

[20 13 9 8]: [f2, f3, f1*f2, f2^2, f1*f2^2, f1*f2*f3, f2^3, f1*f2^3, f1*f2^2*f3, f2^4, f1*f2^4, f1*f2^3*f3, f1*f2^4*f3]
             [3, 4, 5, 7, 9, 10, 11, 13, 14, 15, 17, 18, 20]

[20 17 16 14]: [f2, f3, f1*f2, f2^2, f2*f3, f1*f2^2, f1*f2*f3, f2^3, f2^2*f3, f1*f2^3, f1*f2^2*f3, f2^4, f2^3*f3, f1*f2^4, f1*f2^3*f3, f2^4*f3, f1*f2^4*f3]
               [3, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]