1: (4 6 11)

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

2: (5 18 7)

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

3: (9 19 17)

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

4: (1 6 12)

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