English verb conjugation
MAY FLATTEN

Regular verb: flatten - flattened - flattened

Affirmation

Simple form	V-ing form
I may flatten you may flatten he may flatten we may flatten you may flatten they may flatten	I may be flattening you may be flattening he may be flattening we may be flattening you may be flattening they may be flattening
Perfect	V-ing perfect
I may have flattened you may have flattened he may have flattened we may have flattened you may have flattened they may have flattened	I may have been flattening you may have been flattening he may have been flattening we may have been flattening you may have been flattening they may have been flattening

Negation

Simple form	V-ing form
I mayn't flatten you mayn't flatten he mayn't flatten we mayn't flatten you mayn't flatten they mayn't flatten	I mayn't be flattening you mayn't be flattening he mayn't be flattening we mayn't be flattening you mayn't be flattening they mayn't be flattening
Perfect	V-ing perfect
I mayn't have flattened you mayn't have flattened he mayn't have flattened we mayn't have flattened you mayn't have flattened they mayn't have flattened	I mayn't have been flattening you mayn't have been flattening he mayn't have been flattening we mayn't have been flattening you mayn't have been flattening they mayn't have been flattening

Interrogative form

Simple form	V-ing form
may I flatten? may you flatten? may he flatten? may we flatten? may you flatten? may they flatten?	may I be flattening? may you be flattening? may he be flattening? may we be flattening? may you be flattening? may they be flattening?
Perfect	V-ing perfect
may I have flattened? may you have flattened? may he have flattened? may we have flattened? may you have flattened? may they have flattened?	may I have been flattening? may you have been flattening? may he have been flattening? may we have been flattening? may you have been flattening? may they have been flattening?

Interro-negative form

Simple form	V-ing form
mayn't I flatten? mayn't you flatten? mayn't he flatten? mayn't we flatten? mayn't you flatten? mayn't they flatten?	mayn't I be flattening? mayn't you be flattening? mayn't he be flattening? mayn't we be flattening? mayn't you be flattening? mayn't they be flattening?
Perfect	V-ing perfect
mayn't I have flattened? mayn't you have flattened? mayn't he have flattened? mayn't we have flattened? mayn't you have flattened? mayn't they have flattened?	mayn't I have been flattening? mayn't you have been flattening? mayn't he have been flattening? mayn't we have been flattening? mayn't you have been flattening? mayn't they have been flattening?