1: (1 5 19)

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

2: (0 7 2)

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

3: (4 20 18)

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

4: (3 15 19)

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