${\epsilon }_1$

${\epsilon }_2$

${\epsilon }_3$

Expectation

1

1

1

$p^3{\text{e}}^{3\theta }$

0

1

1

$p^{2}q{\text{e}}^{2\theta }$

1

0

1

$p^{2}q{\text{e}}^{\theta }$

1

1

0

$p^{2}q$

0

0

1

$p{q}^2{\text{e}}^{\theta }$

0

1

0

$p{q}^2$

1

0

0

$p{q}^2$

0

0

0

$q^3$