English verb conjugation
SHOULD PRESERVE

Regular verb: preserve - preserved - preserved

Affirmation

Simple form	V-ing form
I should preserve you should preserve he should preserve we should preserve you should preserve they should preserve	I should be preserving you should be preserving he should be preserving we should be preserving you should be preserving they should be preserving
Perfect	V-ing perfect
I should have preserved you should have preserved he should have preserved we should have preserved you should have preserved they should have preserved	I should have been preserving you should have been preserving he should have been preserving we should have been preserving you should have been preserving they should have been preserving

Negation

Simple form	V-ing form
I should not preserve you should not preserve he should not preserve we should not preserve you should not preserve they should not preserve	I should not be preserving you should not be preserving he should not be preserving we should not be preserving you should not be preserving they should not be preserving
Perfect	V-ing perfect
I should not have preserved you should not have preserved he should not have preserved we should not have preserved you should not have preserved they should not have preserved	I should not have been preserving you should not have been preserving he should not have been preserving we should not have been preserving you should not have been preserving they should not have been preserving

Interrogative form

Simple form	V-ing form
should I preserve? should you preserve? should he preserve? should we preserve? should you preserve? should they preserve?	should I be preserving? should you be preserving? should he be preserving? should we be preserving? should you be preserving? should they be preserving?
Perfect	V-ing perfect
should I have preserved? should you have preserved? should he have preserved? should we have preserved? should you have preserved? should they have preserved?	should I have been preserving? should you have been preserving? should he have been preserving? should we have been preserving? should you have been preserving? should they have been preserving?

Interro-negative form

Simple form	V-ing form
should I not preserve? should you not preserve? should he not preserve? should we not preserve? should you not preserve? should they not preserve?	should I not be preserving? should you not be preserving? should he not be preserving? should we not be preserving? should you not be preserving? should they not be preserving?
Perfect	V-ing perfect
should I not have preserved? should you not have preserved? should he not have preserved? should we not have preserved? should you not have preserved? should they not have preserved?	should I not have been preserving? should you not have been preserving? should he not have been preserving? should we not have been preserving? should you not have been preserving? should they not have been preserving?