English verb conjugation
COULD INTEREST

Regular verb: interest - interested - interested

Affirmation

Simple form	V-ing form
I could interest you could interest he could interest we could interest you could interest they could interest	I could be interesting you could be interesting he could be interesting we could be interesting you could be interesting they could be interesting
Perfect	V-ing perfect
I could have interested you could have interested he could have interested we could have interested you could have interested they could have interested	I could have been interesting you could have been interesting he could have been interesting we could have been interesting you could have been interesting they could have been interesting

Negation

Simple form	V-ing form
I could not interest you could not interest he could not interest we could not interest you could not interest they could not interest	I could not be interesting you could not be interesting he could not be interesting we could not be interesting you could not be interesting they could not be interesting
Perfect	V-ing perfect
I could not have interested you could not have interested he could not have interested we could not have interested you could not have interested they could not have interested	I could not have been interesting you could not have been interesting he could not have been interesting we could not have been interesting you could not have been interesting they could not have been interesting

Interrogative form

Simple form	V-ing form
could I interest? could you interest? could he interest? could we interest? could you interest? could they interest?	could I be interesting? could you be interesting? could he be interesting? could we be interesting? could you be interesting? could they be interesting?
Perfect	V-ing perfect
could I have interested? could you have interested? could he have interested? could we have interested? could you have interested? could they have interested?	could I have been interesting? could you have been interesting? could he have been interesting? could we have been interesting? could you have been interesting? could they have been interesting?

Interro-negative form

Simple form	V-ing form
could I not interest? could you not interest? could he not interest? could we not interest? could you not interest? could they not interest?	could I not be interesting? could you not be interesting? could he not be interesting? could we not be interesting? could you not be interesting? could they not be interesting?
Perfect	V-ing perfect
could I not have interested? could you not have interested? could he not have interested? could we not have interested? could you not have interested? could they not have interested?	could I not have been interesting? could you not have been interesting? could he not have been interesting? could we not have been interesting? could you not have been interesting? could they not have been interesting?