1: (3 8 15)

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

2: (6 17 12)

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

3: (0 15 5)

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

4: (2 20 4)

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