1: (1 6 8)

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

2: (5 19 7)

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

3: (1 6 8)

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

4: (0 10 4)

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