English verb conjugation
COULD WINTERIZE WINTERIZE

Regular verb: winterize winterize - winterize winterized - winterize winterized

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could winterize winterize you could winterize winterize he could winterize winterize we could winterize winterize you could winterize winterize they could winterize winterize	I could be winterize winterizing you could be winterize winterizing he could be winterize winterizing we could be winterize winterizing you could be winterize winterizing they could be winterize winterizing
Perfect	V-ing perfect
I could have winterize winterized you could have winterize winterized he could have winterize winterized we could have winterize winterized you could have winterize winterized they could have winterize winterized	I could have been winterize winterizing you could have been winterize winterizing he could have been winterize winterizing we could have been winterize winterizing you could have been winterize winterizing they could have been winterize winterizing

Negation

Simple form	V-ing form
I couldn't winterize winterize you couldn't winterize winterize he couldn't winterize winterize we couldn't winterize winterize you couldn't winterize winterize they couldn't winterize winterize	I couldn't be winterize winterizing you couldn't be winterize winterizing he couldn't be winterize winterizing we couldn't be winterize winterizing you couldn't be winterize winterizing they couldn't be winterize winterizing
Perfect	V-ing perfect
I couldn't have winterize winterized you couldn't have winterize winterized he couldn't have winterize winterized we couldn't have winterize winterized you couldn't have winterize winterized they couldn't have winterize winterized	I couldn't have been winterize winterizing you couldn't have been winterize winterizing he couldn't have been winterize winterizing we couldn't have been winterize winterizing you couldn't have been winterize winterizing they couldn't have been winterize winterizing

Interrogative form

Simple form	V-ing form
could I winterize winterize? could you winterize winterize? could he winterize winterize? could we winterize winterize? could you winterize winterize? could they winterize winterize?	could I be winterize winterizing? could you be winterize winterizing? could he be winterize winterizing? could we be winterize winterizing? could you be winterize winterizing? could they be winterize winterizing?
Perfect	V-ing perfect
could I have winterize winterized? could you have winterize winterized? could he have winterize winterized? could we have winterize winterized? could you have winterize winterized? could they have winterize winterized?	could I have been winterize winterizing? could you have been winterize winterizing? could he have been winterize winterizing? could we have been winterize winterizing? could you have been winterize winterizing? could they have been winterize winterizing?

Interro-negative form

Simple form	V-ing form
couldn't I winterize winterize? couldn't you winterize winterize? couldn't he winterize winterize? couldn't we winterize winterize? couldn't you winterize winterize? couldn't they winterize winterize?	couldn't I be winterize winterizing? couldn't you be winterize winterizing? couldn't he be winterize winterizing? couldn't we be winterize winterizing? couldn't you be winterize winterizing? couldn't they be winterize winterizing?
Perfect	V-ing perfect
couldn't I have winterize winterized? couldn't you have winterize winterized? couldn't he have winterize winterized? couldn't we have winterize winterized? couldn't you have winterize winterized? couldn't they have winterize winterized?	couldn't I have been winterize winterizing? couldn't you have been winterize winterizing? couldn't he have been winterize winterizing? couldn't we have been winterize winterizing? couldn't you have been winterize winterizing? couldn't they have been winterize winterizing?