English verb conjugation
COULD ITERATE

Regular verb: iterate - iterated - iterated

Affirmation

Simple form	V-ing form
I could iterate you could iterate he could iterate we could iterate you could iterate they could iterate	I could be iterating you could be iterating he could be iterating we could be iterating you could be iterating they could be iterating
Perfect	V-ing perfect
I could have iterated you could have iterated he could have iterated we could have iterated you could have iterated they could have iterated	I could have been iterating you could have been iterating he could have been iterating we could have been iterating you could have been iterating they could have been iterating

Negation

Simple form	V-ing form
I could not iterate you could not iterate he could not iterate we could not iterate you could not iterate they could not iterate	I could not be iterating you could not be iterating he could not be iterating we could not be iterating you could not be iterating they could not be iterating
Perfect	V-ing perfect
I could not have iterated you could not have iterated he could not have iterated we could not have iterated you could not have iterated they could not have iterated	I could not have been iterating you could not have been iterating he could not have been iterating we could not have been iterating you could not have been iterating they could not have been iterating

Interrogative form

Simple form	V-ing form
could I iterate? could you iterate? could he iterate? could we iterate? could you iterate? could they iterate?	could I be iterating? could you be iterating? could he be iterating? could we be iterating? could you be iterating? could they be iterating?
Perfect	V-ing perfect
could I have iterated? could you have iterated? could he have iterated? could we have iterated? could you have iterated? could they have iterated?	could I have been iterating? could you have been iterating? could he have been iterating? could we have been iterating? could you have been iterating? could they have been iterating?

Interro-negative form

Simple form	V-ing form
could I not iterate? could you not iterate? could he not iterate? could we not iterate? could you not iterate? could they not iterate?	could I not be iterating? could you not be iterating? could he not be iterating? could we not be iterating? could you not be iterating? could they not be iterating?
Perfect	V-ing perfect
could I not have iterated? could you not have iterated? could he not have iterated? could we not have iterated? could you not have iterated? could they not have iterated?	could I not have been iterating? could you not have been iterating? could he not have been iterating? could we not have been iterating? could you not have been iterating? could they not have been iterating?