English verb conjugation
COULD UPSIZE

Regular verb: upsize - upsized - upsized

Affirmation

Simple form	V-ing form
I could upsize you could upsize he could upsize we could upsize you could upsize they could upsize	I could be upsizing you could be upsizing he could be upsizing we could be upsizing you could be upsizing they could be upsizing
Perfect	V-ing perfect
I could have upsized you could have upsized he could have upsized we could have upsized you could have upsized they could have upsized	I could have been upsizing you could have been upsizing he could have been upsizing we could have been upsizing you could have been upsizing they could have been upsizing

Negation

Simple form	V-ing form
I could not upsize you could not upsize he could not upsize we could not upsize you could not upsize they could not upsize	I could not be upsizing you could not be upsizing he could not be upsizing we could not be upsizing you could not be upsizing they could not be upsizing
Perfect	V-ing perfect
I could not have upsized you could not have upsized he could not have upsized we could not have upsized you could not have upsized they could not have upsized	I could not have been upsizing you could not have been upsizing he could not have been upsizing we could not have been upsizing you could not have been upsizing they could not have been upsizing

Interrogative form

Simple form	V-ing form
could I upsize? could you upsize? could he upsize? could we upsize? could you upsize? could they upsize?	could I be upsizing? could you be upsizing? could he be upsizing? could we be upsizing? could you be upsizing? could they be upsizing?
Perfect	V-ing perfect
could I have upsized? could you have upsized? could he have upsized? could we have upsized? could you have upsized? could they have upsized?	could I have been upsizing? could you have been upsizing? could he have been upsizing? could we have been upsizing? could you have been upsizing? could they have been upsizing?

Interro-negative form

Simple form	V-ing form
could I not upsize? could you not upsize? could he not upsize? could we not upsize? could you not upsize? could they not upsize?	could I not be upsizing? could you not be upsizing? could he not be upsizing? could we not be upsizing? could you not be upsizing? could they not be upsizing?
Perfect	V-ing perfect
could I not have upsized? could you not have upsized? could he not have upsized? could we not have upsized? could you not have upsized? could they not have upsized?	could I not have been upsizing? could you not have been upsizing? could he not have been upsizing? could we not have been upsizing? could you not have been upsizing? could they not have been upsizing?