1: (5 9 12)

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

2: (6 14 10)

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

3: (5 9 12)

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

4: (3 13 11)

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