1: (1 8 18)

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

2: (0 9 6)

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

3: (8 20 16)

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

4: (13 19 17)

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