1: (2 9 12)

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

2: (0 10 8)

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

3: (2 9 12)

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

4: (1 20 4)

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