English verb conjugation
COULD OWN

Regular verb: own - owned - owned

Affirmation

Simple form	V-ing form
I could own you could own he could own we could own you could own they could own	I could be owning you could be owning he could be owning we could be owning you could be owning they could be owning
Perfect	V-ing perfect
I could have owned you could have owned he could have owned we could have owned you could have owned they could have owned	I could have been owning you could have been owning he could have been owning we could have been owning you could have been owning they could have been owning

Negation

Simple form	V-ing form
I couldn't own you couldn't own he couldn't own we couldn't own you couldn't own they couldn't own	I couldn't be owning you couldn't be owning he couldn't be owning we couldn't be owning you couldn't be owning they couldn't be owning
Perfect	V-ing perfect
I couldn't have owned you couldn't have owned he couldn't have owned we couldn't have owned you couldn't have owned they couldn't have owned	I couldn't have been owning you couldn't have been owning he couldn't have been owning we couldn't have been owning you couldn't have been owning they couldn't have been owning

Interrogative form

Simple form	V-ing form
could I own? could you own? could he own? could we own? could you own? could they own?	could I be owning? could you be owning? could he be owning? could we be owning? could you be owning? could they be owning?
Perfect	V-ing perfect
could I have owned? could you have owned? could he have owned? could we have owned? could you have owned? could they have owned?	could I have been owning? could you have been owning? could he have been owning? could we have been owning? could you have been owning? could they have been owning?

Interro-negative form

Simple form	V-ing form
couldn't I own? couldn't you own? couldn't he own? couldn't we own? couldn't you own? couldn't they own?	couldn't I be owning? couldn't you be owning? couldn't he be owning? couldn't we be owning? couldn't you be owning? couldn't they be owning?
Perfect	V-ing perfect
couldn't I have owned? couldn't you have owned? couldn't he have owned? couldn't we have owned? couldn't you have owned? couldn't they have owned?	couldn't I have been owning? couldn't you have been owning? couldn't he have been owning? couldn't we have been owning? couldn't you have been owning? couldn't they have been owning?