English verb conjugation COULD UNDERSTATE

Regular verb: understate - understated - understated

Affirmation

Simple form

I could understate
you could understate
he could understate
we could understate
you could understate
they could understate

V-ing form

I could be understating
you could be understating
he could be understating
we could be understating
you could be understating
they could be understating

Perfect

I could have understated
you could have understated
he could have understated
we could have understated
you could have understated
they could have understated

V-ing perfect

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

Negation

Simple form

I couldn't understate
you couldn't understate
he couldn't understate
we couldn't understate
you couldn't understate
they couldn't understate

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I understate?
could you understate?
could he understate?
could we understate?
could you understate?
could they understate?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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