1: (2 5 20)

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

2: (0 8 3)

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

3: (4 18 7)

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

4: (2 6 10)

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