English verb conjugation
COULD CROSS-FERTILIZE

Regular verb: cross-fertilize - cross-fertilized - cross-fertilized

Affirmation

Simple form	V-ing form
I could cross-fertilize you could cross-fertilize he could cross-fertilize we could cross-fertilize you could cross-fertilize they could cross-fertilize	I could be cross-fertilizing you could be cross-fertilizing he could be cross-fertilizing we could be cross-fertilizing you could be cross-fertilizing they could be cross-fertilizing
Perfect	V-ing perfect
I could have cross-fertilized you could have cross-fertilized he could have cross-fertilized we could have cross-fertilized you could have cross-fertilized they could have cross-fertilized	I could have been cross-fertilizing you could have been cross-fertilizing he could have been cross-fertilizing we could have been cross-fertilizing you could have been cross-fertilizing they could have been cross-fertilizing

Negation

Simple form	V-ing form
I could not cross-fertilize you could not cross-fertilize he could not cross-fertilize we could not cross-fertilize you could not cross-fertilize they could not cross-fertilize	I could not be cross-fertilizing you could not be cross-fertilizing he could not be cross-fertilizing we could not be cross-fertilizing you could not be cross-fertilizing they could not be cross-fertilizing
Perfect	V-ing perfect
I could not have cross-fertilized you could not have cross-fertilized he could not have cross-fertilized we could not have cross-fertilized you could not have cross-fertilized they could not have cross-fertilized	I could not have been cross-fertilizing you could not have been cross-fertilizing he could not have been cross-fertilizing we could not have been cross-fertilizing you could not have been cross-fertilizing they could not have been cross-fertilizing

Interrogative form

Simple form	V-ing form
could I cross-fertilize? could you cross-fertilize? could he cross-fertilize? could we cross-fertilize? could you cross-fertilize? could they cross-fertilize?	could I be cross-fertilizing? could you be cross-fertilizing? could he be cross-fertilizing? could we be cross-fertilizing? could you be cross-fertilizing? could they be cross-fertilizing?
Perfect	V-ing perfect
could I have cross-fertilized? could you have cross-fertilized? could he have cross-fertilized? could we have cross-fertilized? could you have cross-fertilized? could they have cross-fertilized?	could I have been cross-fertilizing? could you have been cross-fertilizing? could he have been cross-fertilizing? could we have been cross-fertilizing? could you have been cross-fertilizing? could they have been cross-fertilizing?

Interro-negative form

Simple form	V-ing form
could I not cross-fertilize? could you not cross-fertilize? could he not cross-fertilize? could we not cross-fertilize? could you not cross-fertilize? could they not cross-fertilize?	could I not be cross-fertilizing? could you not be cross-fertilizing? could he not be cross-fertilizing? could we not be cross-fertilizing? could you not be cross-fertilizing? could they not be cross-fertilizing?
Perfect	V-ing perfect
could I not have cross-fertilized? could you not have cross-fertilized? could he not have cross-fertilized? could we not have cross-fertilized? could you not have cross-fertilized? could they not have cross-fertilized?	could I not have been cross-fertilizing? could you not have been cross-fertilizing? could he not have been cross-fertilizing? could we not have been cross-fertilizing? could you not have been cross-fertilizing? could they not have been cross-fertilizing?