1: (5 9 12)

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

2: (0 10 8)

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

3: (2 12 7)

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

4: (1 20 3)

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