1: (5 9 13)

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

2: (3 11 8)

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

3: (10 14 12)

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

4: (6 15 13)

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