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