English verb conjugation COULD UNDERESTIMATE

Regular verb: underestimate - underestimated - underestimated

Affirmation

Simple form

I could underestimate
you could underestimate
he could underestimate
we could underestimate
you could underestimate
they could underestimate

V-ing form

I could be underestimating
you could be underestimating
he could be underestimating
we could be underestimating
you could be underestimating
they could be underestimating

Perfect

I could have underestimated
you could have underestimated
he could have underestimated
we could have underestimated
you could have underestimated
they could have underestimated

V-ing perfect

I could have been underestimating
you could have been underestimating
he could have been underestimating
we could have been underestimating
you could have been underestimating
they could have been underestimating

Negation

Simple form

I could not underestimate
you could not underestimate
he could not underestimate
we could not underestimate
you could not underestimate
they could not underestimate

V-ing form

I could not be underestimating
you could not be underestimating
he could not be underestimating
we could not be underestimating
you could not be underestimating
they could not be underestimating

Perfect

I could not have underestimated
you could not have underestimated
he could not have underestimated
we could not have underestimated
you could not have underestimated
they could not have underestimated

V-ing perfect

I could not have been underestimating
you could not have been underestimating
he could not have been underestimating
we could not have been underestimating
you could not have been underestimating
they could not have been underestimating

Interrogative form

Simple form

could I underestimate?
could you underestimate?
could he underestimate?
could we underestimate?
could you underestimate?
could they underestimate?

V-ing form

could I be underestimating?
could you be underestimating?
could he be underestimating?
could we be underestimating?
could you be underestimating?
could they be underestimating?

Perfect

could I have underestimated?
could you have underestimated?
could he have underestimated?
could we have underestimated?
could you have underestimated?
could they have underestimated?

V-ing perfect

could I have been underestimating?
could you have been underestimating?
could he have been underestimating?
could we have been underestimating?
could you have been underestimating?
could they have been underestimating?

Interro-negative form

Simple form

could I not underestimate?
could you not underestimate?
could he not underestimate?
could we not underestimate?
could you not underestimate?
could they not underestimate?

V-ing form

could I not be underestimating?
could you not be underestimating?
could he not be underestimating?
could we not be underestimating?
could you not be underestimating?
could they not be underestimating?

Perfect

could I not have underestimated?
could you not have underestimated?
could he not have underestimated?
could we not have underestimated?
could you not have underestimated?
could they not have underestimated?

V-ing perfect

could I not have been underestimating?
could you not have been underestimating?
could he not have been underestimating?
could we not have been underestimating?
could you not have been underestimating?
could they not have been underestimating?

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