1: (2 7 16)

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

2: (3 20 8)

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

3: (0 19 11)

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

4: (2 10 5)

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