1: (0 5 9)

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

2: (1 14 7)

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

3: (3 8 6)

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

4: (9 12 20)

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