1: (1 7 21)

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

2: (0 20 3)

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

3: (1 19 5)

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

4: (2 6 4)

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