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 couldn't capture you couldn't capture he couldn't capture we couldn't capture you couldn't capture they couldn't capture	I couldn't be capturing you couldn't be capturing he couldn't be capturing we couldn't be capturing you couldn't be capturing they couldn't be capturing
Perfect	V-ing perfect
I couldn't have captured you couldn't have captured he couldn't have captured we couldn't have captured you couldn't have captured they couldn't have captured	I couldn't have been capturing you couldn't have been capturing he couldn't have been capturing we couldn't have been capturing you couldn't have been capturing they couldn't 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
couldn't I capture? couldn't you capture? couldn't he capture? couldn't we capture? couldn't you capture? couldn't they capture?	couldn't I be capturing? couldn't you be capturing? couldn't he be capturing? couldn't we be capturing? couldn't you be capturing? couldn't they be capturing?
Perfect	V-ing perfect
couldn't I have captured? couldn't you have captured? couldn't he have captured? couldn't we have captured? couldn't you have captured? couldn't they have captured?	couldn't I have been capturing? couldn't you have been capturing? couldn't he have been capturing? couldn't we have been capturing? couldn't you have been capturing? couldn't they have been capturing?