English verb conjugation
CAN PRESERVE

Regular verb: preserve - preserved - preserved

Affirmation

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

Negation

Simple form	V-ing form
I cannot preserve you cannot preserve she cannot preserve we cannot preserve you cannot preserve they cannot preserve	I cannot be preserving you cannot be preserving she cannot be preserving we cannot be preserving you cannot be preserving they cannot be preserving
Perfect	V-ing perfect
I cannot have preserved you cannot have preserved she cannot have preserved we cannot have preserved you cannot have preserved they cannot have preserved	I cannot have been preserving you cannot have been preserving she cannot have been preserving we cannot have been preserving you cannot have been preserving they cannot have been preserving

Interrogative form

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

Interro-negative form

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