1: (0 2 12)

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

2: (1 15 6)

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

3: (4 12 21)

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

4: (3 10 5)

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