1: (3 7 13)

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

2: (0 8 6)

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

3: (3 7 13)

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

4: (1 20 4)

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