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 mayn't preserve you mayn't preserve she mayn't preserve we mayn't preserve you mayn't preserve they mayn't preserve
V-ing form
I mayn't be preserving you mayn't be preserving she mayn't be preserving we mayn't be preserving you mayn't be preserving they mayn't be preserving
Perfect
I mayn't have preserved you mayn't have preserved she mayn't have preserved we mayn't have preserved you mayn't have preserved they mayn't have preserved
V-ing perfect
I mayn't have been preserving you mayn't have been preserving she mayn't have been preserving we mayn't have been preserving you mayn't have been preserving they mayn't 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
mayn't I preserve? mayn't you preserve? mayn't she preserve? mayn't we preserve? mayn't you preserve? mayn't they preserve?
V-ing form
mayn't I be preserving? mayn't you be preserving? mayn't she be preserving? mayn't we be preserving? mayn't you be preserving? mayn't they be preserving?
Perfect
mayn't I have preserved? mayn't you have preserved? mayn't she have preserved? mayn't we have preserved? mayn't you have preserved? mayn't they have preserved?
V-ing perfect
mayn't I have been preserving? mayn't you have been preserving? mayn't she have been preserving? mayn't we have been preserving? mayn't you have been preserving? mayn't they have been preserving?