1: (1 9 18)

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

2: (4 19 17)

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

3: (1 9 18)

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

4: (0 6 3)

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