1: (0 6 8)

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

2: (5 10 7)

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

3: (4 15 8)

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

4: (9 17 11)

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