1: (2 5 20)

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

2: (0 8 3)

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

3: (4 16 6)

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

4: (5 11 7)

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