1: (7 11 16)

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

2: (5 11 9)

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

3: (6 18 8)

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

4: (10 17 14)

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