1: (1 8 12)

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

2: (7 17 9)

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

3: (1 8 12)

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

4: (5 13 10)

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