1: (0 1 3)

(0)(1 13 7 5 3 20 18)(2 21 4)(6 12 11)(8 19 17 15 9)(10 16 14)

2: (1 13 18)

(0)(1)(2 21 4)(3 20 18 7 5)(6 12 11)(8 19 17 15 9)(10 16 14)(13)

3: (8 19 17)

(0)(1)(2 21 4)(3 20 18 7 5)(6 12 11)(8 15 9)(10 16 14)(13)(17)(19)

4: (7 20 18)

(0)(1)(2 21 4)(3 20 5)(6 12 11)(7)(8 15 9)(10 16 14)(13)(17)(18)(19)