English verb conjugation COULD UPEND

Regular verb: upend - upended - upended

Affirmation

Simple form

I could upend
you could upend
he could upend
we could upend
you could upend
they could upend

V-ing form

I could be upending
you could be upending
he could be upending
we could be upending
you could be upending
they could be upending

Perfect

I could have upended
you could have upended
he could have upended
we could have upended
you could have upended
they could have upended

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I upend?
could you upend?
could he upend?
could we upend?
could you upend?
could they upend?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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