1: (3 9 12)

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

2: (1 11 8)

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

3: (3 9 12)

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

4: (2 17 4)

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