1: (1 7 18)

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

2: (4 20 17)

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

3: (1 7 18)

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

4: (0 6 2)

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