1: (0 7 10)

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

2: (1 20 8)

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

3: (5 12 9)

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

4: (7 17 10)

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