English verb conjugation
MAY COUGH

Regular verb: cough - coughed - coughed

Affirmation

Simple form	V-ing form
I may cough you may cough she may cough we may cough you may cough they may cough	I may be coughing you may be coughing she may be coughing we may be coughing you may be coughing they may be coughing
Perfect	V-ing perfect
I may have coughed you may have coughed she may have coughed we may have coughed you may have coughed they may have coughed	I may have been coughing you may have been coughing she may have been coughing we may have been coughing you may have been coughing they may have been coughing

Negation

Simple form	V-ing form
I mayn't cough you mayn't cough she mayn't cough we mayn't cough you mayn't cough they mayn't cough	I mayn't be coughing you mayn't be coughing she mayn't be coughing we mayn't be coughing you mayn't be coughing they mayn't be coughing
Perfect	V-ing perfect
I mayn't have coughed you mayn't have coughed she mayn't have coughed we mayn't have coughed you mayn't have coughed they mayn't have coughed	I mayn't have been coughing you mayn't have been coughing she mayn't have been coughing we mayn't have been coughing you mayn't have been coughing they mayn't have been coughing

Interrogative form

Simple form	V-ing form
may I cough? may you cough? may she cough? may we cough? may you cough? may they cough?	may I be coughing? may you be coughing? may she be coughing? may we be coughing? may you be coughing? may they be coughing?
Perfect	V-ing perfect
may I have coughed? may you have coughed? may she have coughed? may we have coughed? may you have coughed? may they have coughed?	may I have been coughing? may you have been coughing? may she have been coughing? may we have been coughing? may you have been coughing? may they have been coughing?

Interro-negative form

Simple form	V-ing form
mayn't I cough? mayn't you cough? mayn't she cough? mayn't we cough? mayn't you cough? mayn't they cough?	mayn't I be coughing? mayn't you be coughing? mayn't she be coughing? mayn't we be coughing? mayn't you be coughing? mayn't they be coughing?
Perfect	V-ing perfect
mayn't I have coughed? mayn't you have coughed? mayn't she have coughed? mayn't we have coughed? mayn't you have coughed? mayn't they have coughed?	mayn't I have been coughing? mayn't you have been coughing? mayn't she have been coughing? mayn't we have been coughing? mayn't you have been coughing? mayn't they have been coughing?