I could polymerize you could polymerize she could polymerize we could polymerize you could polymerize they could polymerize
V-ing form
I could be polymerizing you could be polymerizing she could be polymerizing we could be polymerizing you could be polymerizing they could be polymerizing
Perfect
I could have polymerized you could have polymerized she could have polymerized we could have polymerized you could have polymerized they could have polymerized
V-ing perfect
I could have been polymerizing you could have been polymerizing she could have been polymerizing we could have been polymerizing you could have been polymerizing they could have been polymerizing
Negation
Simple form
I could not polymerize you could not polymerize she could not polymerize we could not polymerize you could not polymerize they could not polymerize
V-ing form
I could not be polymerizing you could not be polymerizing she could not be polymerizing we could not be polymerizing you could not be polymerizing they could not be polymerizing
Perfect
I could not have polymerized you could not have polymerized she could not have polymerized we could not have polymerized you could not have polymerized they could not have polymerized
V-ing perfect
I could not have been polymerizing you could not have been polymerizing she could not have been polymerizing we could not have been polymerizing you could not have been polymerizing they could not have been polymerizing
Interrogative form
Simple form
could I polymerize? could you polymerize? could she polymerize? could we polymerize? could you polymerize? could they polymerize?
V-ing form
could I be polymerizing? could you be polymerizing? could she be polymerizing? could we be polymerizing? could you be polymerizing? could they be polymerizing?
Perfect
could I have polymerized? could you have polymerized? could she have polymerized? could we have polymerized? could you have polymerized? could they have polymerized?
V-ing perfect
could I have been polymerizing? could you have been polymerizing? could she have been polymerizing? could we have been polymerizing? could you have been polymerizing? could they have been polymerizing?
Interro-negative form
Simple form
could I not polymerize? could you not polymerize? could she not polymerize? could we not polymerize? could you not polymerize? could they not polymerize?
V-ing form
could I not be polymerizing? could you not be polymerizing? could she not be polymerizing? could we not be polymerizing? could you not be polymerizing? could they not be polymerizing?
Perfect
could I not have polymerized? could you not have polymerized? could she not have polymerized? could we not have polymerized? could you not have polymerized? could they not have polymerized?
V-ing perfect
could I not have been polymerizing? could you not have been polymerizing? could she not have been polymerizing? could we not have been polymerizing? could you not have been polymerizing? could they not have been polymerizing?