1: (0 1 15)

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

2: (9 15 21)

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

3: (5 18 11)

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

4: (7 13 10)

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