1: (9 10 12)

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

2: (2 6 10)

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

3: (1 7 5)

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

4: (6 12 8)

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