I can cross-fertilize you can cross-fertilize he can cross-fertilize we can cross-fertilize you can cross-fertilize they can cross-fertilize
V-ing form
I can be cross-fertilizing you can be cross-fertilizing he can be cross-fertilizing we can be cross-fertilizing you can be cross-fertilizing they can be cross-fertilizing
Perfect
I can have cross-fertilized you can have cross-fertilized he can have cross-fertilized we can have cross-fertilized you can have cross-fertilized they can have cross-fertilized
V-ing perfect
I can have been cross-fertilizing you can have been cross-fertilizing he can have been cross-fertilizing we can have been cross-fertilizing you can have been cross-fertilizing they can have been cross-fertilizing
Negation
Simple form
I cannot cross-fertilize you cannot cross-fertilize he cannot cross-fertilize we cannot cross-fertilize you cannot cross-fertilize they cannot cross-fertilize
V-ing form
I cannot be cross-fertilizing you cannot be cross-fertilizing he cannot be cross-fertilizing we cannot be cross-fertilizing you cannot be cross-fertilizing they cannot be cross-fertilizing
Perfect
I cannot have cross-fertilized you cannot have cross-fertilized he cannot have cross-fertilized we cannot have cross-fertilized you cannot have cross-fertilized they cannot have cross-fertilized
V-ing perfect
I cannot have been cross-fertilizing you cannot have been cross-fertilizing he cannot have been cross-fertilizing we cannot have been cross-fertilizing you cannot have been cross-fertilizing they cannot have been cross-fertilizing
Interrogative form
Simple form
can I cross-fertilize? can you cross-fertilize? can he cross-fertilize? can we cross-fertilize? can you cross-fertilize? can they cross-fertilize?
V-ing form
can I be cross-fertilizing? can you be cross-fertilizing? can he be cross-fertilizing? can we be cross-fertilizing? can you be cross-fertilizing? can they be cross-fertilizing?
Perfect
can I have cross-fertilized? can you have cross-fertilized? can he have cross-fertilized? can we have cross-fertilized? can you have cross-fertilized? can they have cross-fertilized?
V-ing perfect
can I have been cross-fertilizing? can you have been cross-fertilizing? can he have been cross-fertilizing? can we have been cross-fertilizing? can you have been cross-fertilizing? can they have been cross-fertilizing?
Interro-negative form
Simple form
can I not cross-fertilize? can you not cross-fertilize? can he not cross-fertilize? can we not cross-fertilize? can you not cross-fertilize? can they not cross-fertilize?
V-ing form
can I not be cross-fertilizing? can you not be cross-fertilizing? can he not be cross-fertilizing? can we not be cross-fertilizing? can you not be cross-fertilizing? can they not be cross-fertilizing?
Perfect
can I not have cross-fertilized? can you not have cross-fertilized? can he not have cross-fertilized? can we not have cross-fertilized? can you not have cross-fertilized? can they not have cross-fertilized?
V-ing perfect
can I not have been cross-fertilizing? can you not have been cross-fertilizing? can he not have been cross-fertilizing? can we not have been cross-fertilizing? can you not have been cross-fertilizing? can they not have been cross-fertilizing?