1: (4 7 12)

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

2: (5 13 9)

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

3: (6 10 8)

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

4: (2 3 12)

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