I may preserve you may preserve she may preserve we may preserve you may preserve they may preserve
V-ing form
I may be preserving you may be preserving she may be preserving we may be preserving you may be preserving they may be preserving
Perfect
I may have preserved you may have preserved she may have preserved we may have preserved you may have preserved they may have preserved
V-ing perfect
I may have been preserving you may have been preserving she may have been preserving we may have been preserving you may have been preserving they may have been preserving
Negation
Simple form
I may not preserve you may not preserve she may not preserve we may not preserve you may not preserve they may not preserve
V-ing form
I may not be preserving you may not be preserving she may not be preserving we may not be preserving you may not be preserving they may not be preserving
Perfect
I may not have preserved you may not have preserved she may not have preserved we may not have preserved you may not have preserved they may not have preserved
V-ing perfect
I may not have been preserving you may not have been preserving she may not have been preserving we may not have been preserving you may not have been preserving they may not have been preserving
Interrogative form
Simple form
may I preserve? may you preserve? may she preserve? may we preserve? may you preserve? may they preserve?
V-ing form
may I be preserving? may you be preserving? may she be preserving? may we be preserving? may you be preserving? may they be preserving?
Perfect
may I have preserved? may you have preserved? may she have preserved? may we have preserved? may you have preserved? may they have preserved?
V-ing perfect
may I have been preserving? may you have been preserving? may she have been preserving? may we have been preserving? may you have been preserving? may they have been preserving?
Interro-negative form
Simple form
may I not preserve? may you not preserve? may she not preserve? may we not preserve? may you not preserve? may they not preserve?
V-ing form
may I not be preserving? may you not be preserving? may she not be preserving? may we not be preserving? may you not be preserving? may they not be preserving?
Perfect
may I not have preserved? may you not have preserved? may she not have preserved? may we not have preserved? may you not have preserved? may they not have preserved?
V-ing perfect
may I not have been preserving? may you not have been preserving? may she not have been preserving? may we not have been preserving? may you not have been preserving? may they not have been preserving?