I could become you could become she could become we could become you could become they could become
V-ing form
I could be becoming you could be becoming she could be becoming we could be becoming you could be becoming they could be becoming
Perfect
I could have become you could have become she could have become we could have become you could have become they could have become
V-ing perfect
I could have been becoming you could have been becoming she could have been becoming we could have been becoming you could have been becoming they could have been becoming
Negation
Simple form
I could not become you could not become she could not become we could not become you could not become they could not become
V-ing form
I could not be becoming you could not be becoming she could not be becoming we could not be becoming you could not be becoming they could not be becoming
Perfect
I could not have become you could not have become she could not have become we could not have become you could not have become they could not have become
V-ing perfect
I could not have been becoming you could not have been becoming she could not have been becoming we could not have been becoming you could not have been becoming they could not have been becoming
Interrogative form
Simple form
could I become? could you become? could she become? could we become? could you become? could they become?
V-ing form
could I be becoming? could you be becoming? could she be becoming? could we be becoming? could you be becoming? could they be becoming?
Perfect
could I have become? could you have become? could she have become? could we have become? could you have become? could they have become?
V-ing perfect
could I have been becoming? could you have been becoming? could she have been becoming? could we have been becoming? could you have been becoming? could they have been becoming?
Interro-negative form
Simple form
could I not become? could you not become? could she not become? could we not become? could you not become? could they not become?
V-ing form
could I not be becoming? could you not be becoming? could she not be becoming? could we not be becoming? could you not be becoming? could they not be becoming?
Perfect
could I not have become? could you not have become? could she not have become? could we not have become? could you not have become? could they not have become?
V-ing perfect
could I not have been becoming? could you not have been becoming? could she not have been becoming? could we not have been becoming? could you not have been becoming? could they not have been becoming?