English verb conjugation
COULD SEE

Irregular verb: see - saw - seen

Affirmation

Simple form	V-ing form
I could see you could see he could see we could see you could see they could see	I could be seeing you could be seeing he could be seeing we could be seeing you could be seeing they could be seeing
Perfect	V-ing perfect
I could have seen you could have seen he could have seen we could have seen you could have seen they could have seen	I could have been seeing you could have been seeing he could have been seeing we could have been seeing you could have been seeing they could have been seeing

Negation

Simple form	V-ing form
I could not see you could not see he could not see we could not see you could not see they could not see	I could not be seeing you could not be seeing he could not be seeing we could not be seeing you could not be seeing they could not be seeing
Perfect	V-ing perfect
I could not have seen you could not have seen he could not have seen we could not have seen you could not have seen they could not have seen	I could not have been seeing you could not have been seeing he could not have been seeing we could not have been seeing you could not have been seeing they could not have been seeing

Interrogative form

Simple form	V-ing form
could I see? could you see? could he see? could we see? could you see? could they see?	could I be seeing? could you be seeing? could he be seeing? could we be seeing? could you be seeing? could they be seeing?
Perfect	V-ing perfect
could I have seen? could you have seen? could he have seen? could we have seen? could you have seen? could they have seen?	could I have been seeing? could you have been seeing? could he have been seeing? could we have been seeing? could you have been seeing? could they have been seeing?

Interro-negative form

Simple form	V-ing form
could I not see? could you not see? could he not see? could we not see? could you not see? could they not see?	could I not be seeing? could you not be seeing? could he not be seeing? could we not be seeing? could you not be seeing? could they not be seeing?
Perfect	V-ing perfect
could I not have seen? could you not have seen? could he not have seen? could we not have seen? could you not have seen? could they not have seen?	could I not have been seeing? could you not have been seeing? could he not have been seeing? could we not have been seeing? could you not have been seeing? could they not have been seeing?