6/1 6/3

3/6 2/6

7/5 _x6/7 5/7

4/6 _x6/7

6/0 6/3

4/6 4/6

3/6 6/4 5/7

_x6/7 6/2 3/6

5/7 4/6

0/6 1/6

4/6 6/3 3/6

6/4 _x6/7 _x6/7

6/2 3/6 4/6

6/4 4/6 6/3

2/6 6/3 6/4

6/2 _x6/7 4/6

3/6 6/3 6/4

2/6 7/6_x 4/6

2/6 4/6

1/6 4/6

7/6_x 6/4

6/2 6/4

7/6_{x x}6/7 6/3

6/4 _x6/7 7/6_x

4/6 4/6

3/6 4/6