1: (6 10 13)

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

2: (4 10 8)

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

3: (5 14 7)

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

4: (9 17 11)

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