Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could say say you could say say he could say say we could say say you could say say they could say say
V-ing form
I could be say saying you could be say saying he could be say saying we could be say saying you could be say saying they could be say saying
Perfect
I could have say sayed you could have say sayed he could have say sayed we could have say sayed you could have say sayed they could have say sayed
V-ing perfect
I could have been say saying you could have been say saying he could have been say saying we could have been say saying you could have been say saying they could have been say saying
Negation
Simple form
I could not say say you could not say say he could not say say we could not say say you could not say say they could not say say
V-ing form
I could not be say saying you could not be say saying he could not be say saying we could not be say saying you could not be say saying they could not be say saying
Perfect
I could not have say sayed you could not have say sayed he could not have say sayed we could not have say sayed you could not have say sayed they could not have say sayed
V-ing perfect
I could not have been say saying you could not have been say saying he could not have been say saying we could not have been say saying you could not have been say saying they could not have been say saying
Interrogative form
Simple form
could I say say? could you say say? could he say say? could we say say? could you say say? could they say say?
V-ing form
could I be say saying? could you be say saying? could he be say saying? could we be say saying? could you be say saying? could they be say saying?
Perfect
could I have say sayed? could you have say sayed? could he have say sayed? could we have say sayed? could you have say sayed? could they have say sayed?
V-ing perfect
could I have been say saying? could you have been say saying? could he have been say saying? could we have been say saying? could you have been say saying? could they have been say saying?
Interro-negative form
Simple form
could I not say say? could you not say say? could he not say say? could we not say say? could you not say say? could they not say say?
V-ing form
could I not be say saying? could you not be say saying? could he not be say saying? could we not be say saying? could you not be say saying? could they not be say saying?
Perfect
could I not have say sayed? could you not have say sayed? could he not have say sayed? could we not have say sayed? could you not have say sayed? could they not have say sayed?
V-ing perfect
could I not have been say saying? could you not have been say saying? could he not have been say saying? could we not have been say saying? could you not have been say saying? could they not have been say saying?