1: (0 3 17)

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

2: (1 20 6)

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

3: (3 18 8)

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

4: (5 11 7)

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