English verb conjugation
COULD RUBBERIZE

Regular verb: rubberize - rubberized - rubberized

Affirmation

Simple form	V-ing form
I could rubberize you could rubberize she could rubberize we could rubberize you could rubberize they could rubberize	I could be rubberizing you could be rubberizing she could be rubberizing we could be rubberizing you could be rubberizing they could be rubberizing
Perfect	V-ing perfect
I could have rubberized you could have rubberized she could have rubberized we could have rubberized you could have rubberized they could have rubberized	I could have been rubberizing you could have been rubberizing she could have been rubberizing we could have been rubberizing you could have been rubberizing they could have been rubberizing

Negation

Simple form	V-ing form
I couldn't rubberize you couldn't rubberize she couldn't rubberize we couldn't rubberize you couldn't rubberize they couldn't rubberize	I couldn't be rubberizing you couldn't be rubberizing she couldn't be rubberizing we couldn't be rubberizing you couldn't be rubberizing they couldn't be rubberizing
Perfect	V-ing perfect
I couldn't have rubberized you couldn't have rubberized she couldn't have rubberized we couldn't have rubberized you couldn't have rubberized they couldn't have rubberized	I couldn't have been rubberizing you couldn't have been rubberizing she couldn't have been rubberizing we couldn't have been rubberizing you couldn't have been rubberizing they couldn't have been rubberizing

Interrogative form

Simple form	V-ing form
could I rubberize? could you rubberize? could she rubberize? could we rubberize? could you rubberize? could they rubberize?	could I be rubberizing? could you be rubberizing? could she be rubberizing? could we be rubberizing? could you be rubberizing? could they be rubberizing?
Perfect	V-ing perfect
could I have rubberized? could you have rubberized? could she have rubberized? could we have rubberized? could you have rubberized? could they have rubberized?	could I have been rubberizing? could you have been rubberizing? could she have been rubberizing? could we have been rubberizing? could you have been rubberizing? could they have been rubberizing?

Interro-negative form

Simple form	V-ing form
couldn't I rubberize? couldn't you rubberize? couldn't she rubberize? couldn't we rubberize? couldn't you rubberize? couldn't they rubberize?	couldn't I be rubberizing? couldn't you be rubberizing? couldn't she be rubberizing? couldn't we be rubberizing? couldn't you be rubberizing? couldn't they be rubberizing?
Perfect	V-ing perfect
couldn't I have rubberized? couldn't you have rubberized? couldn't she have rubberized? couldn't we have rubberized? couldn't you have rubberized? couldn't they have rubberized?	couldn't I have been rubberizing? couldn't you have been rubberizing? couldn't she have been rubberizing? couldn't we have been rubberizing? couldn't you have been rubberizing? couldn't they have been rubberizing?