1: (0 1 4)

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

2: (2 4 10)

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

3: (3 17 8)

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

4: (6 12 9)

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