1: (1 6 13)

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

2: (4 20 7)

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

3: (1 6 13)

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

4: (0 18 2)

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