1: (6 11 15)

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

2: (5 13 7)

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

3: (3 11 10)

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

4: (1 8 4)

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