English verb conjugation MUST UPHOLD

Irregular verb: uphold - upheld - upheld

Affirmation

Simple form

I must uphold
you must uphold
he must uphold
we must uphold
you must uphold
they must uphold

V-ing form

I must be upholding
you must be upholding
he must be upholding
we must be upholding
you must be upholding
they must be upholding

Perfect

I must have upheld
you must have upheld
he must have upheld
we must have upheld
you must have upheld
they must have upheld

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I uphold?
must you uphold?
must he uphold?
must we uphold?
must you uphold?
must they uphold?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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