1: (7 16 20)

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

2: (6 18 8)

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

3: (15 19 17)

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

4: (4 12 16)

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