English verb conjugation
COULD EXAMINE

Regular verb: examine - examined - examined

Affirmation

Simple form	V-ing form
I could examine you could examine he could examine we could examine you could examine they could examine	I could be examining you could be examining he could be examining we could be examining you could be examining they could be examining
Perfect	V-ing perfect
I could have examined you could have examined he could have examined we could have examined you could have examined they could have examined	I could have been examining you could have been examining he could have been examining we could have been examining you could have been examining they could have been examining

Negation

Simple form	V-ing form
I could not examine you could not examine he could not examine we could not examine you could not examine they could not examine	I could not be examining you could not be examining he could not be examining we could not be examining you could not be examining they could not be examining
Perfect	V-ing perfect
I could not have examined you could not have examined he could not have examined we could not have examined you could not have examined they could not have examined	I could not have been examining you could not have been examining he could not have been examining we could not have been examining you could not have been examining they could not have been examining

Interrogative form

Simple form	V-ing form
could I examine? could you examine? could he examine? could we examine? could you examine? could they examine?	could I be examining? could you be examining? could he be examining? could we be examining? could you be examining? could they be examining?
Perfect	V-ing perfect
could I have examined? could you have examined? could he have examined? could we have examined? could you have examined? could they have examined?	could I have been examining? could you have been examining? could he have been examining? could we have been examining? could you have been examining? could they have been examining?

Interro-negative form

Simple form	V-ing form
could I not examine? could you not examine? could he not examine? could we not examine? could you not examine? could they not examine?	could I not be examining? could you not be examining? could he not be examining? could we not be examining? could you not be examining? could they not be examining?
Perfect	V-ing perfect
could I not have examined? could you not have examined? could he not have examined? could we not have examined? could you not have examined? could they not have examined?	could I not have been examining? could you not have been examining? could he not have been examining? could we not have been examining? could you not have been examining? could they not have been examining?