1: (8 12 15)

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

2: (6 12 10)

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

3: (1 9 7)

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

4: (11 17 13)

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