1: (0 1 7)

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

2: (3 7 17)

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

3: (2 15 5)

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

4: (4 7 18)

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