1: (0 6 18)

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

2: (1 20 13)

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

3: (7 18 16)

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

4: (3 17 15)

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