1: (0 5 8)

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

2: (3 13 5)

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

3: (2 18 4)

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

4: (1 9 7)

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