1: (0 1 3)

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

2: (3 9 20)

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

3: (2 14 5)

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

4: (6 17 10)

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