1: (5 9 12)

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

2: (6 13 11)

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

3: (2 9 7)

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

4: (8 14 10)

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