1: (2 7 9)

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

2: (0 8 4)

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

3: (2 7 9)

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

4: (1 13 3)

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