1: (6 8 16)

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

2: (3 8 20)

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

3: (2 18 4)

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

4: (3 16 5)

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