1: (2 10 16)

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

2: (7 20 12)

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

3: (0 19 5)

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

4: (2 8 6)

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