1: (1 9 11)

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

2: (8 20 10)

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

3: (1 9 11)

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

4: (0 19 3)

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