1: (0 10 17)

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

2: (5 20 12)

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

3: (9 14 11)

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

4: (6 10 19)

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