1: (1 8 13)

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

2: (10 13 20)

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

3: (9 17 11)

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

4: (8 19 13)

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