1: (1 5 9)

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

2: (7 9 14)

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

3: (4 20 6)

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

4: (0 18 2)

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