1: (6 10 12)

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

2: (2 10 14)

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

3: (1 8 5)

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

4: (11 17 13)

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