English verb conjugation
MAY UNDERUSE

Regular verb: underuse - underused - underused

Affirmation

Simple form	V-ing form
I may underuse you may underuse he may underuse we may underuse you may underuse they may underuse	I may be underusing you may be underusing he may be underusing we may be underusing you may be underusing they may be underusing
Perfect	V-ing perfect
I may have underused you may have underused he may have underused we may have underused you may have underused they may have underused	I may have been underusing you may have been underusing he may have been underusing we may have been underusing you may have been underusing they may have been underusing

Negation

Simple form	V-ing form
I may not underuse you may not underuse he may not underuse we may not underuse you may not underuse they may not underuse	I may not be underusing you may not be underusing he may not be underusing we may not be underusing you may not be underusing they may not be underusing
Perfect	V-ing perfect
I may not have underused you may not have underused he may not have underused we may not have underused you may not have underused they may not have underused	I may not have been underusing you may not have been underusing he may not have been underusing we may not have been underusing you may not have been underusing they may not have been underusing

Interrogative form

Simple form	V-ing form
may I underuse? may you underuse? may he underuse? may we underuse? may you underuse? may they underuse?	may I be underusing? may you be underusing? may he be underusing? may we be underusing? may you be underusing? may they be underusing?
Perfect	V-ing perfect
may I have underused? may you have underused? may he have underused? may we have underused? may you have underused? may they have underused?	may I have been underusing? may you have been underusing? may he have been underusing? may we have been underusing? may you have been underusing? may they have been underusing?

Interro-negative form

Simple form	V-ing form
may I not underuse? may you not underuse? may he not underuse? may we not underuse? may you not underuse? may they not underuse?	may I not be underusing? may you not be underusing? may he not be underusing? may we not be underusing? may you not be underusing? may they not be underusing?
Perfect	V-ing perfect
may I not have underused? may you not have underused? may he not have underused? may we not have underused? may you not have underused? may they not have underused?	may I not have been underusing? may you not have been underusing? may he not have been underusing? may we not have been underusing? may you not have been underusing? may they not have been underusing?