1: (0 2 4)

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

2: (3 4 10)

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

3: (1 20 5)

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

4: (2 17 8)

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