I may suffocate you may suffocate he may suffocate we may suffocate you may suffocate they may suffocate
V-ing form
I may be suffocating you may be suffocating he may be suffocating we may be suffocating you may be suffocating they may be suffocating
Perfect
I may have suffocated you may have suffocated he may have suffocated we may have suffocated you may have suffocated they may have suffocated
V-ing perfect
I may have been suffocating you may have been suffocating he may have been suffocating we may have been suffocating you may have been suffocating they may have been suffocating
Negation
Simple form
I mayn't suffocate you mayn't suffocate he mayn't suffocate we mayn't suffocate you mayn't suffocate they mayn't suffocate
V-ing form
I mayn't be suffocating you mayn't be suffocating he mayn't be suffocating we mayn't be suffocating you mayn't be suffocating they mayn't be suffocating
Perfect
I mayn't have suffocated you mayn't have suffocated he mayn't have suffocated we mayn't have suffocated you mayn't have suffocated they mayn't have suffocated
V-ing perfect
I mayn't have been suffocating you mayn't have been suffocating he mayn't have been suffocating we mayn't have been suffocating you mayn't have been suffocating they mayn't have been suffocating
Interrogative form
Simple form
may I suffocate? may you suffocate? may he suffocate? may we suffocate? may you suffocate? may they suffocate?
V-ing form
may I be suffocating? may you be suffocating? may he be suffocating? may we be suffocating? may you be suffocating? may they be suffocating?
Perfect
may I have suffocated? may you have suffocated? may he have suffocated? may we have suffocated? may you have suffocated? may they have suffocated?
V-ing perfect
may I have been suffocating? may you have been suffocating? may he have been suffocating? may we have been suffocating? may you have been suffocating? may they have been suffocating?
Interro-negative form
Simple form
mayn't I suffocate? mayn't you suffocate? mayn't he suffocate? mayn't we suffocate? mayn't you suffocate? mayn't they suffocate?
V-ing form
mayn't I be suffocating? mayn't you be suffocating? mayn't he be suffocating? mayn't we be suffocating? mayn't you be suffocating? mayn't they be suffocating?
Perfect
mayn't I have suffocated? mayn't you have suffocated? mayn't he have suffocated? mayn't we have suffocated? mayn't you have suffocated? mayn't they have suffocated?
V-ing perfect
mayn't I have been suffocating? mayn't you have been suffocating? mayn't he have been suffocating? mayn't we have been suffocating? mayn't you have been suffocating? mayn't they have been suffocating?