1: (1 5 6)

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

2: (6 12 15)

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

3: (11 16 13)

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

4: (5 15 7)

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