1: (0 11 15)

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

2: (1 20 13)

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

3: (10 14 12)

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

4: (7 11 18)

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