English verb conjugation
COULD OVERLAP

Regular verb: overlap - overlapped - overlapped

Affirmation

Simple form	V-ing form
I could overlap you could overlap she could overlap we could overlap you could overlap they could overlap	I could be overlapping you could be overlapping she could be overlapping we could be overlapping you could be overlapping they could be overlapping
Perfect	V-ing perfect
I could have overlapped you could have overlapped she could have overlapped we could have overlapped you could have overlapped they could have overlapped	I could have been overlapping you could have been overlapping she could have been overlapping we could have been overlapping you could have been overlapping they could have been overlapping

Negation

Simple form	V-ing form
I could not overlap you could not overlap she could not overlap we could not overlap you could not overlap they could not overlap	I could not be overlapping you could not be overlapping she could not be overlapping we could not be overlapping you could not be overlapping they could not be overlapping
Perfect	V-ing perfect
I could not have overlapped you could not have overlapped she could not have overlapped we could not have overlapped you could not have overlapped they could not have overlapped	I could not have been overlapping you could not have been overlapping she could not have been overlapping we could not have been overlapping you could not have been overlapping they could not have been overlapping

Interrogative form

Simple form	V-ing form
could I overlap? could you overlap? could she overlap? could we overlap? could you overlap? could they overlap?	could I be overlapping? could you be overlapping? could she be overlapping? could we be overlapping? could you be overlapping? could they be overlapping?
Perfect	V-ing perfect
could I have overlapped? could you have overlapped? could she have overlapped? could we have overlapped? could you have overlapped? could they have overlapped?	could I have been overlapping? could you have been overlapping? could she have been overlapping? could we have been overlapping? could you have been overlapping? could they have been overlapping?

Interro-negative form

Simple form	V-ing form
could I not overlap? could you not overlap? could she not overlap? could we not overlap? could you not overlap? could they not overlap?	could I not be overlapping? could you not be overlapping? could she not be overlapping? could we not be overlapping? could you not be overlapping? could they not be overlapping?
Perfect	V-ing perfect
could I not have overlapped? could you not have overlapped? could she not have overlapped? could we not have overlapped? could you not have overlapped? could they not have overlapped?	could I not have been overlapping? could you not have been overlapping? could she not have been overlapping? could we not have been overlapping? could you not have been overlapping? could they not have been overlapping?