1: (0 7 17)

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

2: (1 20 10)

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

3: (6 12 8)

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

4: (2 7 19)

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