4, __ ,6

__, 17 ,18

11, 12 ,__

9, __ ,11

__, 19 ,20

4, 5 ,__

15, __ ,17

__, 12 ,13

0, 1 , __

7, __ ,9

__, 1 , 2

12, __ ,14

7, __ ,9

4, __ ,6

__, 1 ,2

2, 3 ,__

8, 9 ,__

15, __ ,17

__, 13 ,14

15, __ ,17

__, 14 ,15

__, 7 ,8

__, 11 ,12

3, 4 ,__

7, 8 ,__

18, 19 ,__

12, 13 ,__

__, 1 ,2

15, __ ,17

9, __ ,11