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