1: (6 7 13)

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

2: (5 10 13)

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

3: (9 14 11)

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

4: (8 17 12)

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