1: (2 7 15)

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

2: (5 17 8)

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

3: (14 18 16)

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

4: (2 11 6)

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