1: (0 1 6)

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

2: (3 6 18)

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

3: (2 8 4)

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

4: (7 20 15)

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