I may chew you may chew he may chew we may chew you may chew they may chew
V-ing form
I may be chewing you may be chewing he may be chewing we may be chewing you may be chewing they may be chewing
Perfect
I may have chewed you may have chewed he 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 he 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 he 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 he 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 he 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 he 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 he chew? may we chew? may you chew? may they chew?
V-ing form
may I be chewing? may you be chewing? may he be chewing? may we be chewing? may you be chewing? may they be chewing?
Perfect
may I have chewed? may you have chewed? may he 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 he 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 he 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 he 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 he 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 he have been chewing? mayn't we have been chewing? mayn't you have been chewing? mayn't they have been chewing?