1: (0 2 4)

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

2: (1 8 2)

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

3: (3 10 5)

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

4: (7 12 9)

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