1: (0 4 12)

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

2: (2 20 9)

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

3: (1 6 3)

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

4: (5 12 7)

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