English verb conjugation
MAY SMOOTHEN

Regular verb: smoothen - smoothened - smoothened

Affirmation

Simple form	V-ing form
I may smoothen you may smoothen he may smoothen we may smoothen you may smoothen they may smoothen	I may be smoothening you may be smoothening he may be smoothening we may be smoothening you may be smoothening they may be smoothening
Perfect	V-ing perfect
I may have smoothened you may have smoothened he may have smoothened we may have smoothened you may have smoothened they may have smoothened	I may have been smoothening you may have been smoothening he may have been smoothening we may have been smoothening you may have been smoothening they may have been smoothening

Negation

Simple form	V-ing form
I mayn't smoothen you mayn't smoothen he mayn't smoothen we mayn't smoothen you mayn't smoothen they mayn't smoothen	I mayn't be smoothening you mayn't be smoothening he mayn't be smoothening we mayn't be smoothening you mayn't be smoothening they mayn't be smoothening
Perfect	V-ing perfect
I mayn't have smoothened you mayn't have smoothened he mayn't have smoothened we mayn't have smoothened you mayn't have smoothened they mayn't have smoothened	I mayn't have been smoothening you mayn't have been smoothening he mayn't have been smoothening we mayn't have been smoothening you mayn't have been smoothening they mayn't have been smoothening

Interrogative form

Simple form	V-ing form
may I smoothen? may you smoothen? may he smoothen? may we smoothen? may you smoothen? may they smoothen?	may I be smoothening? may you be smoothening? may he be smoothening? may we be smoothening? may you be smoothening? may they be smoothening?
Perfect	V-ing perfect
may I have smoothened? may you have smoothened? may he have smoothened? may we have smoothened? may you have smoothened? may they have smoothened?	may I have been smoothening? may you have been smoothening? may he have been smoothening? may we have been smoothening? may you have been smoothening? may they have been smoothening?

Interro-negative form

Simple form	V-ing form
mayn't I smoothen? mayn't you smoothen? mayn't he smoothen? mayn't we smoothen? mayn't you smoothen? mayn't they smoothen?	mayn't I be smoothening? mayn't you be smoothening? mayn't he be smoothening? mayn't we be smoothening? mayn't you be smoothening? mayn't they be smoothening?
Perfect	V-ing perfect
mayn't I have smoothened? mayn't you have smoothened? mayn't he have smoothened? mayn't we have smoothened? mayn't you have smoothened? mayn't they have smoothened?	mayn't I have been smoothening? mayn't you have been smoothening? mayn't he have been smoothening? mayn't we have been smoothening? mayn't you have been smoothening? mayn't they have been smoothening?