1: (1 8 12)

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

2: (3 17 10)

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

3: (1 9 6)

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

4: (2 15 4)

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