English verb conjugation
MIGHT UNDERUSE

Regular verb: underuse - underused - underused

Affirmation

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

Negation

Simple form	V-ing form
I mightn't underuse you mightn't underuse he mightn't underuse we mightn't underuse you mightn't underuse they mightn't underuse	I mightn't be underusing you mightn't be underusing he mightn't be underusing we mightn't be underusing you mightn't be underusing they mightn't be underusing
Perfect	V-ing perfect
I mightn't have underused you mightn't have underused he mightn't have underused we mightn't have underused you mightn't have underused they mightn't have underused	I mightn't have been underusing you mightn't have been underusing he mightn't have been underusing we mightn't have been underusing you mightn't have been underusing they mightn't have been underusing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mightn't I underuse? mightn't you underuse? mightn't he underuse? mightn't we underuse? mightn't you underuse? mightn't they underuse?	mightn't I be underusing? mightn't you be underusing? mightn't he be underusing? mightn't we be underusing? mightn't you be underusing? mightn't they be underusing?
Perfect	V-ing perfect
mightn't I have underused? mightn't you have underused? mightn't he have underused? mightn't we have underused? mightn't you have underused? mightn't they have underused?	mightn't I have been underusing? mightn't you have been underusing? mightn't he have been underusing? mightn't we have been underusing? mightn't you have been underusing? mightn't they have been underusing?