1: (4 9 12)

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

2: (7 15 10)

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

3: (4 17 8)

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

4: (5 13 11)

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