English verb conjugation
CAN FERTILIZE

Regular verb: fertilize - fertilized - fertilized

Affirmation

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

Negation

Simple form	V-ing form
I can't fertilize you can't fertilize he can't fertilize we can't fertilize you can't fertilize they can't fertilize	I can't be fertilizing you can't be fertilizing he can't be fertilizing we can't be fertilizing you can't be fertilizing they can't be fertilizing
Perfect	V-ing perfect
I can't have fertilized you can't have fertilized he can't have fertilized we can't have fertilized you can't have fertilized they can't have fertilized	I can't have been fertilizing you can't have been fertilizing he can't have been fertilizing we can't have been fertilizing you can't have been fertilizing they can't have been fertilizing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I fertilize? can't you fertilize? can't he fertilize? can't we fertilize? can't you fertilize? can't they fertilize?	can't I be fertilizing? can't you be fertilizing? can't he be fertilizing? can't we be fertilizing? can't you be fertilizing? can't they be fertilizing?
Perfect	V-ing perfect
can't I have fertilized? can't you have fertilized? can't he have fertilized? can't we have fertilized? can't you have fertilized? can't they have fertilized?	can't I have been fertilizing? can't you have been fertilizing? can't he have been fertilizing? can't we have been fertilizing? can't you have been fertilizing? can't they have been fertilizing?