1: (0 2 16)

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

2: (1 20 3)

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

3: (2 19 9)

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

4: (8 17 14)

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