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 couldn't underestimate
you couldn't underestimate
he couldn't underestimate
we couldn't underestimate
you couldn't underestimate
they couldn't underestimate

V-ing form

I couldn't be underestimating
you couldn't be underestimating
he couldn't be underestimating
we couldn't be underestimating
you couldn't be underestimating
they couldn't be underestimating

Perfect

I couldn't have underestimated
you couldn't have underestimated
he couldn't have underestimated
we couldn't have underestimated
you couldn't have underestimated
they couldn't have underestimated

V-ing perfect

I couldn't have been underestimating
you couldn't have been underestimating
he couldn't have been underestimating
we couldn't have been underestimating
you couldn't have been underestimating
they couldn't 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

couldn't I underestimate?
couldn't you underestimate?
couldn't he underestimate?
couldn't we underestimate?
couldn't you underestimate?
couldn't they underestimate?

V-ing form

couldn't I be underestimating?
couldn't you be underestimating?
couldn't he be underestimating?
couldn't we be underestimating?
couldn't you be underestimating?
couldn't they be underestimating?

Perfect

couldn't I have underestimated?
couldn't you have underestimated?
couldn't he have underestimated?
couldn't we have underestimated?
couldn't you have underestimated?
couldn't they have underestimated?

V-ing perfect

couldn't I have been underestimating?
couldn't you have been underestimating?
couldn't he have been underestimating?
couldn't we have been underestimating?
couldn't you have been underestimating?
couldn't they have been underestimating?

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