1: (6 8 18)

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

2: (4 9 7)

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

3: (2 10 8)

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

4: (1 5 3)

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