English verb conjugation
COULD TENURE

Regular verb: tenure - tenured - tenured

Affirmation

Simple form	V-ing form
I could tenure you could tenure he could tenure we could tenure you could tenure they could tenure	I could be tenuring you could be tenuring he could be tenuring we could be tenuring you could be tenuring they could be tenuring
Perfect	V-ing perfect
I could have tenured you could have tenured he could have tenured we could have tenured you could have tenured they could have tenured	I could have been tenuring you could have been tenuring he could have been tenuring we could have been tenuring you could have been tenuring they could have been tenuring

Negation

Simple form	V-ing form
I couldn't tenure you couldn't tenure he couldn't tenure we couldn't tenure you couldn't tenure they couldn't tenure	I couldn't be tenuring you couldn't be tenuring he couldn't be tenuring we couldn't be tenuring you couldn't be tenuring they couldn't be tenuring
Perfect	V-ing perfect
I couldn't have tenured you couldn't have tenured he couldn't have tenured we couldn't have tenured you couldn't have tenured they couldn't have tenured	I couldn't have been tenuring you couldn't have been tenuring he couldn't have been tenuring we couldn't have been tenuring you couldn't have been tenuring they couldn't have been tenuring

Interrogative form

Simple form	V-ing form
could I tenure? could you tenure? could he tenure? could we tenure? could you tenure? could they tenure?	could I be tenuring? could you be tenuring? could he be tenuring? could we be tenuring? could you be tenuring? could they be tenuring?
Perfect	V-ing perfect
could I have tenured? could you have tenured? could he have tenured? could we have tenured? could you have tenured? could they have tenured?	could I have been tenuring? could you have been tenuring? could he have been tenuring? could we have been tenuring? could you have been tenuring? could they have been tenuring?

Interro-negative form

Simple form	V-ing form
couldn't I tenure? couldn't you tenure? couldn't he tenure? couldn't we tenure? couldn't you tenure? couldn't they tenure?	couldn't I be tenuring? couldn't you be tenuring? couldn't he be tenuring? couldn't we be tenuring? couldn't you be tenuring? couldn't they be tenuring?
Perfect	V-ing perfect
couldn't I have tenured? couldn't you have tenured? couldn't he have tenured? couldn't we have tenured? couldn't you have tenured? couldn't they have tenured?	couldn't I have been tenuring? couldn't you have been tenuring? couldn't he have been tenuring? couldn't we have been tenuring? couldn't you have been tenuring? couldn't they have been tenuring?