English verb conjugation
MAY STRAIGHTEN

Regular verb: straighten - straightened - straightened

Affirmation

Simple form	V-ing form
I may straighten you may straighten he may straighten we may straighten you may straighten they may straighten	I may be straightening you may be straightening he may be straightening we may be straightening you may be straightening they may be straightening
Perfect	V-ing perfect
I may have straightened you may have straightened he may have straightened we may have straightened you may have straightened they may have straightened	I may have been straightening you may have been straightening he may have been straightening we may have been straightening you may have been straightening they may have been straightening

Negation

Simple form	V-ing form
I mayn't straighten you mayn't straighten he mayn't straighten we mayn't straighten you mayn't straighten they mayn't straighten	I mayn't be straightening you mayn't be straightening he mayn't be straightening we mayn't be straightening you mayn't be straightening they mayn't be straightening
Perfect	V-ing perfect
I mayn't have straightened you mayn't have straightened he mayn't have straightened we mayn't have straightened you mayn't have straightened they mayn't have straightened	I mayn't have been straightening you mayn't have been straightening he mayn't have been straightening we mayn't have been straightening you mayn't have been straightening they mayn't have been straightening

Interrogative form

Simple form	V-ing form
may I straighten? may you straighten? may he straighten? may we straighten? may you straighten? may they straighten?	may I be straightening? may you be straightening? may he be straightening? may we be straightening? may you be straightening? may they be straightening?
Perfect	V-ing perfect
may I have straightened? may you have straightened? may he have straightened? may we have straightened? may you have straightened? may they have straightened?	may I have been straightening? may you have been straightening? may he have been straightening? may we have been straightening? may you have been straightening? may they have been straightening?

Interro-negative form

Simple form	V-ing form
mayn't I straighten? mayn't you straighten? mayn't he straighten? mayn't we straighten? mayn't you straighten? mayn't they straighten?	mayn't I be straightening? mayn't you be straightening? mayn't he be straightening? mayn't we be straightening? mayn't you be straightening? mayn't they be straightening?
Perfect	V-ing perfect
mayn't I have straightened? mayn't you have straightened? mayn't he have straightened? mayn't we have straightened? mayn't you have straightened? mayn't they have straightened?	mayn't I have been straightening? mayn't you have been straightening? mayn't he have been straightening? mayn't we have been straightening? mayn't you have been straightening? mayn't they have been straightening?