English verb conjugation
COULD POLYMERIZE

Regular verb: polymerize - polymerized - polymerized

Affirmation

Simple form	V-ing form
I could polymerize you could polymerize he could polymerize we could polymerize you could polymerize they could polymerize	I could be polymerizing you could be polymerizing he could be polymerizing we could be polymerizing you could be polymerizing they could be polymerizing
Perfect	V-ing perfect
I could have polymerized you could have polymerized he could have polymerized we could have polymerized you could have polymerized they could have polymerized	I could have been polymerizing you could have been polymerizing he could have been polymerizing we could have been polymerizing you could have been polymerizing they could have been polymerizing

Negation

Simple form	V-ing form
I couldn't polymerize you couldn't polymerize he couldn't polymerize we couldn't polymerize you couldn't polymerize they couldn't polymerize	I couldn't be polymerizing you couldn't be polymerizing he couldn't be polymerizing we couldn't be polymerizing you couldn't be polymerizing they couldn't be polymerizing
Perfect	V-ing perfect
I couldn't have polymerized you couldn't have polymerized he couldn't have polymerized we couldn't have polymerized you couldn't have polymerized they couldn't have polymerized	I couldn't have been polymerizing you couldn't have been polymerizing he couldn't have been polymerizing we couldn't have been polymerizing you couldn't have been polymerizing they couldn't have been polymerizing

Interrogative form

Simple form	V-ing form
could I polymerize? could you polymerize? could he polymerize? could we polymerize? could you polymerize? could they polymerize?	could I be polymerizing? could you be polymerizing? could he be polymerizing? could we be polymerizing? could you be polymerizing? could they be polymerizing?
Perfect	V-ing perfect
could I have polymerized? could you have polymerized? could he have polymerized? could we have polymerized? could you have polymerized? could they have polymerized?	could I have been polymerizing? could you have been polymerizing? could he have been polymerizing? could we have been polymerizing? could you have been polymerizing? could they have been polymerizing?

Interro-negative form

Simple form	V-ing form
couldn't I polymerize? couldn't you polymerize? couldn't he polymerize? couldn't we polymerize? couldn't you polymerize? couldn't they polymerize?	couldn't I be polymerizing? couldn't you be polymerizing? couldn't he be polymerizing? couldn't we be polymerizing? couldn't you be polymerizing? couldn't they be polymerizing?
Perfect	V-ing perfect
couldn't I have polymerized? couldn't you have polymerized? couldn't he have polymerized? couldn't we have polymerized? couldn't you have polymerized? couldn't they have polymerized?	couldn't I have been polymerizing? couldn't you have been polymerizing? couldn't he have been polymerizing? couldn't we have been polymerizing? couldn't you have been polymerizing? couldn't they have been polymerizing?