1: (0 4 18)

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

2: (2 20 9)

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

3: (1 6 3)

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

4: (2 5 18)

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