1: (0 3 4)

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

2: (1 5 9)

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

3: (2 20 8)

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

4: (1 6 4)

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