${\epsilon }_1$

${\epsilon }_2$

${\epsilon }_3$

${\epsilon }_4$

${\epsilon }_5$

${\epsilon }_6$

${\tau }_1$

0

1

0

0

0

0

${\tau }_2$

0

0

0

1

0

0

${\tau }_3$

0

0

1

0

0

0

${\tau }_4$

0

0

0

0

0

1