English verb conjugation
COULD NUMBER

Regular verb: number - numbered - numbered

Affirmation

Simple form	V-ing form
I could number you could number she could number we could number you could number they could number	I could be numbering you could be numbering she could be numbering we could be numbering you could be numbering they could be numbering
Perfect	V-ing perfect
I could have numbered you could have numbered she could have numbered we could have numbered you could have numbered they could have numbered	I could have been numbering you could have been numbering she could have been numbering we could have been numbering you could have been numbering they could have been numbering

Negation

Simple form	V-ing form
I could not number you could not number she could not number we could not number you could not number they could not number	I could not be numbering you could not be numbering she could not be numbering we could not be numbering you could not be numbering they could not be numbering
Perfect	V-ing perfect
I could not have numbered you could not have numbered she could not have numbered we could not have numbered you could not have numbered they could not have numbered	I could not have been numbering you could not have been numbering she could not have been numbering we could not have been numbering you could not have been numbering they could not have been numbering

Interrogative form

Simple form	V-ing form
could I number? could you number? could she number? could we number? could you number? could they number?	could I be numbering? could you be numbering? could she be numbering? could we be numbering? could you be numbering? could they be numbering?
Perfect	V-ing perfect
could I have numbered? could you have numbered? could she have numbered? could we have numbered? could you have numbered? could they have numbered?	could I have been numbering? could you have been numbering? could she have been numbering? could we have been numbering? could you have been numbering? could they have been numbering?

Interro-negative form

Simple form	V-ing form
could I not number? could you not number? could she not number? could we not number? could you not number? could they not number?	could I not be numbering? could you not be numbering? could she not be numbering? could we not be numbering? could you not be numbering? could they not be numbering?
Perfect	V-ing perfect
could I not have numbered? could you not have numbered? could she not have numbered? could we not have numbered? could you not have numbered? could they not have numbered?	could I not have been numbering? could you not have been numbering? could she not have been numbering? could we not have been numbering? could you not have been numbering? could they not have been numbering?