1: (4 8 12)

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

2: (7 14 9)

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

3: (4 8 12)

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

4: (3 13 5)

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