1: (1 7 9)

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

2: (6 10 8)

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

3: (5 12 9)

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

4: (2 16 11)

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