1: (0 1 5)

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

2: (5 8 20)

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

3: (3 14 7)

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

4: (11 21 19)

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