1: (1 10 20)

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

2: (0 18 5)

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

3: (2 10 7)

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

4: (4 9 6)

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