1: (0 6 11)

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

2: (7 11 13)

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

3: (4 12 10)

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

4: (2 8 5)

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