1: (1 6 12)

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

2: (5 16 8)

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

3: (1 18 15)

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

4: (4 10 7)

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