1: (0 1 5)

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

2: (3 5 20)

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

3: (2 10 4)

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

4: (1 17 5)

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