1: (0 4 7)

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

2: (2 9 5)

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

3: (4 8 6)

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

4: (1 18 3)

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