English verb conjugation
COULD SAY

Irregular verb: say - said - said

Affirmation

Simple form	V-ing form
I could say you could say she could say we could say you could say they could say	I could be saying you could be saying she could be saying we could be saying you could be saying they could be saying
Perfect	V-ing perfect
I could have said you could have said she could have said we could have said you could have said they could have said	I could have been saying you could have been saying she could have been saying we could have been saying you could have been saying they could have been saying

Negation

Simple form	V-ing form
I could not say you could not say she could not say we could not say you could not say they could not say	I could not be saying you could not be saying she could not be saying we could not be saying you could not be saying they could not be saying
Perfect	V-ing perfect
I could not have said you could not have said she could not have said we could not have said you could not have said they could not have said	I could not have been saying you could not have been saying she could not have been saying we could not have been saying you could not have been saying they could not have been saying

Interrogative form

Simple form	V-ing form
could I say? could you say? could she say? could we say? could you say? could they say?	could I be saying? could you be saying? could she be saying? could we be saying? could you be saying? could they be saying?
Perfect	V-ing perfect
could I have said? could you have said? could she have said? could we have said? could you have said? could they have said?	could I have been saying? could you have been saying? could she have been saying? could we have been saying? could you have been saying? could they have been saying?

Interro-negative form

Simple form	V-ing form
could I not say? could you not say? could she not say? could we not say? could you not say? could they not say?	could I not be saying? could you not be saying? could she not be saying? could we not be saying? could you not be saying? could they not be saying?
Perfect	V-ing perfect
could I not have said? could you not have said? could she not have said? could we not have said? could you not have said? could they not have said?	could I not have been saying? could you not have been saying? could she not have been saying? could we not have been saying? could you not have been saying? could they not have been saying?