English verb conjugation CAN UNDERUSE

Regular verb: underuse - underused - underused

Affirmation

Simple form

I can underuse
you can underuse
she can underuse
we can underuse
you can underuse
they can underuse

V-ing form

I can be underusing
you can be underusing
she can be underusing
we can be underusing
you can be underusing
they can be underusing

Perfect

I can have underused
you can have underused
she can have underused
we can have underused
you can have underused
they can have underused

V-ing perfect

I can have been underusing
you can have been underusing
she can have been underusing
we can have been underusing
you can have been underusing
they can have been underusing

Negation

Simple form

I cannot underuse
you cannot underuse
she cannot underuse
we cannot underuse
you cannot underuse
they cannot underuse

V-ing form

I cannot be underusing
you cannot be underusing
she cannot be underusing
we cannot be underusing
you cannot be underusing
they cannot be underusing

Perfect

I cannot have underused
you cannot have underused
she cannot have underused
we cannot have underused
you cannot have underused
they cannot have underused

V-ing perfect

I cannot have been underusing
you cannot have been underusing
she cannot have been underusing
we cannot have been underusing
you cannot have been underusing
they cannot have been underusing

Interrogative form

Simple form

can I underuse?
can you underuse?
can she underuse?
can we underuse?
can you underuse?
can they underuse?

V-ing form

can I be underusing?
can you be underusing?
can she be underusing?
can we be underusing?
can you be underusing?
can they be underusing?

Perfect

can I have underused?
can you have underused?
can she have underused?
can we have underused?
can you have underused?
can they have underused?

V-ing perfect

can I have been underusing?
can you have been underusing?
can she have been underusing?
can we have been underusing?
can you have been underusing?
can they have been underusing?

Interro-negative form

Simple form

can I not underuse?
can you not underuse?
can she not underuse?
can we not underuse?
can you not underuse?
can they not underuse?

V-ing form

can I not be underusing?
can you not be underusing?
can she not be underusing?
can we not be underusing?
can you not be underusing?
can they not be underusing?

Perfect

can I not have underused?
can you not have underused?
can she not have underused?
can we not have underused?
can you not have underused?
can they not have underused?

V-ing perfect

can I not have been underusing?
can you not have been underusing?
can she not have been underusing?
can we not have been underusing?
can you not have been underusing?
can they not have been underusing?

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