English verb conjugation
SHOULD FERTILIZE

Regular verb: fertilize - fertilized - fertilized

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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