1: (6 8 16)

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

2: (4 10 7)

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

3: (2 12 8)

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

4: (9 17 15)

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