1: (0 2 12)

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

2: (1 17 6)

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

3: (4 12 21)

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

4: (3 10 5)

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