English verb conjugation
COULD ENSURE

Regular verb: ensure - ensured - ensured

Affirmation

Simple form	V-ing form
I could ensure you could ensure he could ensure we could ensure you could ensure they could ensure	I could be ensuring you could be ensuring he could be ensuring we could be ensuring you could be ensuring they could be ensuring
Perfect	V-ing perfect
I could have ensured you could have ensured he could have ensured we could have ensured you could have ensured they could have ensured	I could have been ensuring you could have been ensuring he could have been ensuring we could have been ensuring you could have been ensuring they could have been ensuring

Negation

Simple form	V-ing form
I could not ensure you could not ensure he could not ensure we could not ensure you could not ensure they could not ensure	I could not be ensuring you could not be ensuring he could not be ensuring we could not be ensuring you could not be ensuring they could not be ensuring
Perfect	V-ing perfect
I could not have ensured you could not have ensured he could not have ensured we could not have ensured you could not have ensured they could not have ensured	I could not have been ensuring you could not have been ensuring he could not have been ensuring we could not have been ensuring you could not have been ensuring they could not have been ensuring

Interrogative form

Simple form	V-ing form
could I ensure? could you ensure? could he ensure? could we ensure? could you ensure? could they ensure?	could I be ensuring? could you be ensuring? could he be ensuring? could we be ensuring? could you be ensuring? could they be ensuring?
Perfect	V-ing perfect
could I have ensured? could you have ensured? could he have ensured? could we have ensured? could you have ensured? could they have ensured?	could I have been ensuring? could you have been ensuring? could he have been ensuring? could we have been ensuring? could you have been ensuring? could they have been ensuring?

Interro-negative form

Simple form	V-ing form
could I not ensure? could you not ensure? could he not ensure? could we not ensure? could you not ensure? could they not ensure?	could I not be ensuring? could you not be ensuring? could he not be ensuring? could we not be ensuring? could you not be ensuring? could they not be ensuring?
Perfect	V-ing perfect
could I not have ensured? could you not have ensured? could he not have ensured? could we not have ensured? could you not have ensured? could they not have ensured?	could I not have been ensuring? could you not have been ensuring? could he not have been ensuring? could we not have been ensuring? could you not have been ensuring? could they not have been ensuring?