1: (2 5 13)

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

2: (0 7 4)

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

3: (2 5 13)

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

4: (1 19 3)

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