English verb conjugation COULD UPHOLD

Irregular verb: uphold - upheld - upheld

Affirmation

Simple form

I could uphold
you could uphold
he could uphold
we could uphold
you could uphold
they could uphold

V-ing form

I could be upholding
you could be upholding
he could be upholding
we could be upholding
you could be upholding
they could be upholding

Perfect

I could have upheld
you could have upheld
he could have upheld
we could have upheld
you could have upheld
they could have upheld

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I uphold?
could you uphold?
could he uphold?
could we uphold?
could you uphold?
could they uphold?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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