1: (1 9 11)

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

2: (8 12 10)

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

3: (4 13 11)

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

4: (2 17 5)

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