1: (6 11 15)

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

2: (3 11 10)

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

3: (5 19 7)

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

4: (1 8 4)

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