1: (2 8 16)

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

2: (7 16 15)

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

3: (1 10 3)

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

4: (5 12 9)

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