1: (8 16 18)

(0 18 4 3 16)(1 9 7)(2 19 5)(6 12 10)(8)(11 15 13)(14 20 17)

2: (0 3 16)

(0)(1 9 7)(2 19 5)(3 18 4)(6 12 10)(8)(11 15 13)(14 20 17)(16)

3: (2 19 5)

(0)(1 9 7)(2)(3 18 4)(5)(6 12 10)(8)(11 15 13)(14 20 17)(16)(19)

4: (1 9 7)

(0)(1)(2)(3 18 4)(5)(6 12 10)(7)(8)(9)(11 15 13)(14 20 17)(16)(19)