English verb conjugation
MAY COUGH

Regular verb: cough - coughed - coughed

Affirmation

Simple form	V-ing form
I may cough you may cough he may cough we may cough you may cough they may cough	I may be coughing you may be coughing he 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 he 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 he 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 he 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 he 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 he 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 he 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 he cough? may we cough? may you cough? may they cough?	may I be coughing? may you be coughing? may he 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 he 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 he 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 he 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 he 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 he 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 he have been coughing? mayn't we have been coughing? mayn't you have been coughing? mayn't they have been coughing?