1: (0 6 11)

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

2: (1 20 8)

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

3: (5 9 7)

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

4: (2 6 16)

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