1: (0 2 17)

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

2: (4 17 20)

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

3: (2 19 6)

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

4: (3 10 5)

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