English verb conjugation
COULD STANDARDIZE

Regular verb: standardize - standardized - standardized

Affirmation

Simple form	V-ing form
I could standardize you could standardize she could standardize we could standardize you could standardize they could standardize	I could be standardizing you could be standardizing she could be standardizing we could be standardizing you could be standardizing they could be standardizing
Perfect	V-ing perfect
I could have standardized you could have standardized she could have standardized we could have standardized you could have standardized they could have standardized	I could have been standardizing you could have been standardizing she could have been standardizing we could have been standardizing you could have been standardizing they could have been standardizing

Negation

Simple form	V-ing form
I could not standardize you could not standardize she could not standardize we could not standardize you could not standardize they could not standardize	I could not be standardizing you could not be standardizing she could not be standardizing we could not be standardizing you could not be standardizing they could not be standardizing
Perfect	V-ing perfect
I could not have standardized you could not have standardized she could not have standardized we could not have standardized you could not have standardized they could not have standardized	I could not have been standardizing you could not have been standardizing she could not have been standardizing we could not have been standardizing you could not have been standardizing they could not have been standardizing

Interrogative form

Simple form	V-ing form
could I standardize? could you standardize? could she standardize? could we standardize? could you standardize? could they standardize?	could I be standardizing? could you be standardizing? could she be standardizing? could we be standardizing? could you be standardizing? could they be standardizing?
Perfect	V-ing perfect
could I have standardized? could you have standardized? could she have standardized? could we have standardized? could you have standardized? could they have standardized?	could I have been standardizing? could you have been standardizing? could she have been standardizing? could we have been standardizing? could you have been standardizing? could they have been standardizing?

Interro-negative form

Simple form	V-ing form
could I not standardize? could you not standardize? could she not standardize? could we not standardize? could you not standardize? could they not standardize?	could I not be standardizing? could you not be standardizing? could she not be standardizing? could we not be standardizing? could you not be standardizing? could they not be standardizing?
Perfect	V-ing perfect
could I not have standardized? could you not have standardized? could she not have standardized? could we not have standardized? could you not have standardized? could they not have standardized?	could I not have been standardizing? could you not have been standardizing? could she not have been standardizing? could we not have been standardizing? could you not have been standardizing? could they not have been standardizing?