1: (3 6 16)

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

2: (4 18 7)

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

3: (15 20 17)

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

4: (3 14 5)

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