5/7 6/4 7/6_x

6/1 6/1

4/6 5/7

1/6 6/4 _x6/7

4/6 7/6_{x x}6/7

7/5 7/6_x

_x6/7 1/6

7/5 2/6 _x6/7

7/5 7/5

3/6 3/6

6/4 4/6 _x6/7

7/5 5/7 7/6_x

1/6 3/6

2/6 6/3 _x6/7

3/6 4/6

4/6 1/6

6/3 6/4

7/6_x 6/1

5/7 2/6

6/1 6/1

6/2 6/1

6/4 6/4

6/3 6/4

6/4 4/6 _x6/7

3/6 1/6

6/1 6/4

6/0 6/1

6/1 6/0

3/6 6/3 1/6

3/6 4/6

6/2 6/0

6/1 6/1

7/6_x 7/6_x

6/3 6/1