1: (0 4 7)

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

2: (3 9 5)

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

3: (2 20 7)

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

4: (4 10 6)

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