1: (7 11 12)

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

2: (3 7 9)

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

3: (5 13 8)

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

4: (1 6 4)

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