I may guard you may guard she may guard we may guard you may guard they may guard
V-ing form
I may be guarding you may be guarding she may be guarding we may be guarding you may be guarding they may be guarding
Perfect
I may have guarded you may have guarded she may have guarded we may have guarded you may have guarded they may have guarded
V-ing perfect
I may have been guarding you may have been guarding she may have been guarding we may have been guarding you may have been guarding they may have been guarding
Negation
Simple form
I mayn't guard you mayn't guard she mayn't guard we mayn't guard you mayn't guard they mayn't guard
V-ing form
I mayn't be guarding you mayn't be guarding she mayn't be guarding we mayn't be guarding you mayn't be guarding they mayn't be guarding
Perfect
I mayn't have guarded you mayn't have guarded she mayn't have guarded we mayn't have guarded you mayn't have guarded they mayn't have guarded
V-ing perfect
I mayn't have been guarding you mayn't have been guarding she mayn't have been guarding we mayn't have been guarding you mayn't have been guarding they mayn't have been guarding
Interrogative form
Simple form
may I guard? may you guard? may she guard? may we guard? may you guard? may they guard?
V-ing form
may I be guarding? may you be guarding? may she be guarding? may we be guarding? may you be guarding? may they be guarding?
Perfect
may I have guarded? may you have guarded? may she have guarded? may we have guarded? may you have guarded? may they have guarded?
V-ing perfect
may I have been guarding? may you have been guarding? may she have been guarding? may we have been guarding? may you have been guarding? may they have been guarding?
Interro-negative form
Simple form
mayn't I guard? mayn't you guard? mayn't she guard? mayn't we guard? mayn't you guard? mayn't they guard?
V-ing form
mayn't I be guarding? mayn't you be guarding? mayn't she be guarding? mayn't we be guarding? mayn't you be guarding? mayn't they be guarding?
Perfect
mayn't I have guarded? mayn't you have guarded? mayn't she have guarded? mayn't we have guarded? mayn't you have guarded? mayn't they have guarded?
V-ing perfect
mayn't I have been guarding? mayn't you have been guarding? mayn't she have been guarding? mayn't we have been guarding? mayn't you have been guarding? mayn't they have been guarding?