English verb conjugation CAN UNDERPERFORM

Regular verb: underperform - underperformed - underperformed

Affirmation

Simple form

I can underperform
you can underperform
he can underperform
we can underperform
you can underperform
they can underperform

V-ing form

I can be underperforming
you can be underperforming
he can be underperforming
we can be underperforming
you can be underperforming
they can be underperforming

Perfect

I can have underperformed
you can have underperformed
he can have underperformed
we can have underperformed
you can have underperformed
they can have underperformed

V-ing perfect

I can have been underperforming
you can have been underperforming
he can have been underperforming
we can have been underperforming
you can have been underperforming
they can have been underperforming

Negation

Simple form

I cannot underperform
you cannot underperform
he cannot underperform
we cannot underperform
you cannot underperform
they cannot underperform

V-ing form

I cannot be underperforming
you cannot be underperforming
he cannot be underperforming
we cannot be underperforming
you cannot be underperforming
they cannot be underperforming

Perfect

I cannot have underperformed
you cannot have underperformed
he cannot have underperformed
we cannot have underperformed
you cannot have underperformed
they cannot have underperformed

V-ing perfect

I cannot have been underperforming
you cannot have been underperforming
he cannot have been underperforming
we cannot have been underperforming
you cannot have been underperforming
they cannot have been underperforming

Interrogative form

Simple form

can I underperform?
can you underperform?
can he underperform?
can we underperform?
can you underperform?
can they underperform?

V-ing form

can I be underperforming?
can you be underperforming?
can he be underperforming?
can we be underperforming?
can you be underperforming?
can they be underperforming?

Perfect

can I have underperformed?
can you have underperformed?
can he have underperformed?
can we have underperformed?
can you have underperformed?
can they have underperformed?

V-ing perfect

can I have been underperforming?
can you have been underperforming?
can he have been underperforming?
can we have been underperforming?
can you have been underperforming?
can they have been underperforming?

Interro-negative form

Simple form

can I not underperform?
can you not underperform?
can he not underperform?
can we not underperform?
can you not underperform?
can they not underperform?

V-ing form

can I not be underperforming?
can you not be underperforming?
can he not be underperforming?
can we not be underperforming?
can you not be underperforming?
can they not be underperforming?

Perfect

can I not have underperformed?
can you not have underperformed?
can he not have underperformed?
can we not have underperformed?
can you not have underperformed?
can they not have underperformed?

V-ing perfect

can I not have been underperforming?
can you not have been underperforming?
can he not have been underperforming?
can we not have been underperforming?
can you not have been underperforming?
can they not have been underperforming?

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