1: (3 7 15)

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

2: (0 8 6)

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

3: (2 9 4)

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

4: (1 12 7)

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