1: (1 7 18)

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

2: (0 8 6)

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

3: (1 7 18)

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

4: (2 20 17)

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