English verb conjugation
COULD SUBPOENA

Regular verb: subpoena - subpoenaed - subpoenaed

Affirmation

Simple form	V-ing form
I could subpoena you could subpoena he could subpoena we could subpoena you could subpoena they could subpoena	I could be subpoenaing you could be subpoenaing he could be subpoenaing we could be subpoenaing you could be subpoenaing they could be subpoenaing
Perfect	V-ing perfect
I could have subpoenaed you could have subpoenaed he could have subpoenaed we could have subpoenaed you could have subpoenaed they could have subpoenaed	I could have been subpoenaing you could have been subpoenaing he could have been subpoenaing we could have been subpoenaing you could have been subpoenaing they could have been subpoenaing

Negation

Simple form	V-ing form
I couldn't subpoena you couldn't subpoena he couldn't subpoena we couldn't subpoena you couldn't subpoena they couldn't subpoena	I couldn't be subpoenaing you couldn't be subpoenaing he couldn't be subpoenaing we couldn't be subpoenaing you couldn't be subpoenaing they couldn't be subpoenaing
Perfect	V-ing perfect
I couldn't have subpoenaed you couldn't have subpoenaed he couldn't have subpoenaed we couldn't have subpoenaed you couldn't have subpoenaed they couldn't have subpoenaed	I couldn't have been subpoenaing you couldn't have been subpoenaing he couldn't have been subpoenaing we couldn't have been subpoenaing you couldn't have been subpoenaing they couldn't have been subpoenaing

Interrogative form

Simple form	V-ing form
could I subpoena? could you subpoena? could he subpoena? could we subpoena? could you subpoena? could they subpoena?	could I be subpoenaing? could you be subpoenaing? could he be subpoenaing? could we be subpoenaing? could you be subpoenaing? could they be subpoenaing?
Perfect	V-ing perfect
could I have subpoenaed? could you have subpoenaed? could he have subpoenaed? could we have subpoenaed? could you have subpoenaed? could they have subpoenaed?	could I have been subpoenaing? could you have been subpoenaing? could he have been subpoenaing? could we have been subpoenaing? could you have been subpoenaing? could they have been subpoenaing?

Interro-negative form

Simple form	V-ing form
couldn't I subpoena? couldn't you subpoena? couldn't he subpoena? couldn't we subpoena? couldn't you subpoena? couldn't they subpoena?	couldn't I be subpoenaing? couldn't you be subpoenaing? couldn't he be subpoenaing? couldn't we be subpoenaing? couldn't you be subpoenaing? couldn't they be subpoenaing?
Perfect	V-ing perfect
couldn't I have subpoenaed? couldn't you have subpoenaed? couldn't he have subpoenaed? couldn't we have subpoenaed? couldn't you have subpoenaed? couldn't they have subpoenaed?	couldn't I have been subpoenaing? couldn't you have been subpoenaing? couldn't he have been subpoenaing? couldn't we have been subpoenaing? couldn't you have been subpoenaing? couldn't they have been subpoenaing?