1

2

3

4

5

6

7

8

$s_1/{\overline{s}}_2$

0

0

0

0

1

1

1

1

$s_3/{\overline{s}}_4$

0

0

1

1

0

0

1

1

$s_5/{\overline{s}}_6$

0

1

0

1

0

1

0

1