1: (1 11 20)

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

2: (0 19 8)

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

3: (1 11 20)

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

4: (7 12 9)

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