1: (1 6 20)

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

2: (0 18 2)

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

3: (1 6 20)

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

4: (5 19 8)

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