1: (4 8 15)

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

2: (2 9 7)

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

3: (0 5 3)

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

4: (8 16 10)

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