English verb conjugation
COULD ECONOMIZE

Regular verb: economize - economized - economized

Affirmation

Simple form	V-ing form
I could economize you could economize he could economize we could economize you could economize they could economize	I could be economizing you could be economizing he could be economizing we could be economizing you could be economizing they could be economizing
Perfect	V-ing perfect
I could have economized you could have economized he could have economized we could have economized you could have economized they could have economized	I could have been economizing you could have been economizing he could have been economizing we could have been economizing you could have been economizing they could have been economizing

Negation

Simple form	V-ing form
I could not economize you could not economize he could not economize we could not economize you could not economize they could not economize	I could not be economizing you could not be economizing he could not be economizing we could not be economizing you could not be economizing they could not be economizing
Perfect	V-ing perfect
I could not have economized you could not have economized he could not have economized we could not have economized you could not have economized they could not have economized	I could not have been economizing you could not have been economizing he could not have been economizing we could not have been economizing you could not have been economizing they could not have been economizing

Interrogative form

Simple form	V-ing form
could I economize? could you economize? could he economize? could we economize? could you economize? could they economize?	could I be economizing? could you be economizing? could he be economizing? could we be economizing? could you be economizing? could they be economizing?
Perfect	V-ing perfect
could I have economized? could you have economized? could he have economized? could we have economized? could you have economized? could they have economized?	could I have been economizing? could you have been economizing? could he have been economizing? could we have been economizing? could you have been economizing? could they have been economizing?

Interro-negative form

Simple form	V-ing form
could I not economize? could you not economize? could he not economize? could we not economize? could you not economize? could they not economize?	could I not be economizing? could you not be economizing? could he not be economizing? could we not be economizing? could you not be economizing? could they not be economizing?
Perfect	V-ing perfect
could I not have economized? could you not have economized? could he not have economized? could we not have economized? could you not have economized? could they not have economized?	could I not have been economizing? could you not have been economizing? could he not have been economizing? could we not have been economizing? could you not have been economizing? could they not have been economizing?