1: (4 9 20)

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

2: (2 19 4)

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

3: (3 10 5)

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

4: (2 16 9)

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