English verb conjugation
COULD CAPTURE

Regular verb: capture - captured - captured

Affirmation

Simple form	V-ing form
I could capture you could capture he could capture we could capture you could capture they could capture	I could be capturing you could be capturing he could be capturing we could be capturing you could be capturing they could be capturing
Perfect	V-ing perfect
I could have captured you could have captured he could have captured we could have captured you could have captured they could have captured	I could have been capturing you could have been capturing he could have been capturing we could have been capturing you could have been capturing they could have been capturing

Negation

Simple form	V-ing form
I could not capture you could not capture he could not capture we could not capture you could not capture they could not capture	I could not be capturing you could not be capturing he could not be capturing we could not be capturing you could not be capturing they could not be capturing
Perfect	V-ing perfect
I could not have captured you could not have captured he could not have captured we could not have captured you could not have captured they could not have captured	I could not have been capturing you could not have been capturing he could not have been capturing we could not have been capturing you could not have been capturing they could not have been capturing

Interrogative form

Simple form	V-ing form
could I capture? could you capture? could he capture? could we capture? could you capture? could they capture?	could I be capturing? could you be capturing? could he be capturing? could we be capturing? could you be capturing? could they be capturing?
Perfect	V-ing perfect
could I have captured? could you have captured? could he have captured? could we have captured? could you have captured? could they have captured?	could I have been capturing? could you have been capturing? could he have been capturing? could we have been capturing? could you have been capturing? could they have been capturing?

Interro-negative form

Simple form	V-ing form
could I not capture? could you not capture? could he not capture? could we not capture? could you not capture? could they not capture?	could I not be capturing? could you not be capturing? could he not be capturing? could we not be capturing? could you not be capturing? could they not be capturing?
Perfect	V-ing perfect
could I not have captured? could you not have captured? could he not have captured? could we not have captured? could you not have captured? could they not have captured?	could I not have been capturing? could you not have been capturing? could he not have been capturing? could we not have been capturing? could you not have been capturing? could they not have been capturing?