I can prefertilize you can prefertilize he can prefertilize we can prefertilize you can prefertilize they can prefertilize
V-ing form
I can be prefertilizing you can be prefertilizing he can be prefertilizing we can be prefertilizing you can be prefertilizing they can be prefertilizing
Perfect
I can have prefertilized you can have prefertilized he can have prefertilized we can have prefertilized you can have prefertilized they can have prefertilized
V-ing perfect
I can have been prefertilizing you can have been prefertilizing he can have been prefertilizing we can have been prefertilizing you can have been prefertilizing they can have been prefertilizing
Negation
Simple form
I cannot prefertilize you cannot prefertilize he cannot prefertilize we cannot prefertilize you cannot prefertilize they cannot prefertilize
V-ing form
I cannot be prefertilizing you cannot be prefertilizing he cannot be prefertilizing we cannot be prefertilizing you cannot be prefertilizing they cannot be prefertilizing
Perfect
I cannot have prefertilized you cannot have prefertilized he cannot have prefertilized we cannot have prefertilized you cannot have prefertilized they cannot have prefertilized
V-ing perfect
I cannot have been prefertilizing you cannot have been prefertilizing he cannot have been prefertilizing we cannot have been prefertilizing you cannot have been prefertilizing they cannot have been prefertilizing
Interrogative form
Simple form
can I prefertilize? can you prefertilize? can he prefertilize? can we prefertilize? can you prefertilize? can they prefertilize?
V-ing form
can I be prefertilizing? can you be prefertilizing? can he be prefertilizing? can we be prefertilizing? can you be prefertilizing? can they be prefertilizing?
Perfect
can I have prefertilized? can you have prefertilized? can he have prefertilized? can we have prefertilized? can you have prefertilized? can they have prefertilized?
V-ing perfect
can I have been prefertilizing? can you have been prefertilizing? can he have been prefertilizing? can we have been prefertilizing? can you have been prefertilizing? can they have been prefertilizing?
Interro-negative form
Simple form
can I not prefertilize? can you not prefertilize? can he not prefertilize? can we not prefertilize? can you not prefertilize? can they not prefertilize?
V-ing form
can I not be prefertilizing? can you not be prefertilizing? can he not be prefertilizing? can we not be prefertilizing? can you not be prefertilizing? can they not be prefertilizing?
Perfect
can I not have prefertilized? can you not have prefertilized? can he not have prefertilized? can we not have prefertilized? can you not have prefertilized? can they not have prefertilized?
V-ing perfect
can I not have been prefertilizing? can you not have been prefertilizing? can he not have been prefertilizing? can we not have been prefertilizing? can you not have been prefertilizing? can they not have been prefertilizing?