1: (3 9 15)

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

2: (0 10 8)

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

3: (2 20 4)

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

4: (7 11 9)

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