1: (0 1 3)

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

2: (3 7 20)

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

3: (2 10 5)

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

4: (6 12 8)

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