English verb conjugation MUST VOUCH

Regular verb: vouch - vouched - vouched

Affirmation

Simple form

I must vouch
you must vouch
she must vouch
we must vouch
you must vouch
they must vouch

V-ing form

I must be vouching
you must be vouching
she must be vouching
we must be vouching
you must be vouching
they must be vouching

Perfect

I must have vouched
you must have vouched
she must have vouched
we must have vouched
you must have vouched
they must have vouched

V-ing perfect

I must have been vouching
you must have been vouching
she must have been vouching
we must have been vouching
you must have been vouching
they must have been vouching

Negation

Simple form

I mustn't vouch
you mustn't vouch
she mustn't vouch
we mustn't vouch
you mustn't vouch
they mustn't vouch

V-ing form

I mustn't be vouching
you mustn't be vouching
she mustn't be vouching
we mustn't be vouching
you mustn't be vouching
they mustn't be vouching

Perfect

I mustn't have vouched
you mustn't have vouched
she mustn't have vouched
we mustn't have vouched
you mustn't have vouched
they mustn't have vouched

V-ing perfect

I mustn't have been vouching
you mustn't have been vouching
she mustn't have been vouching
we mustn't have been vouching
you mustn't have been vouching
they mustn't have been vouching

Interrogative form

Simple form

must I vouch?
must you vouch?
must she vouch?
must we vouch?
must you vouch?
must they vouch?

V-ing form

must I be vouching?
must you be vouching?
must she be vouching?
must we be vouching?
must you be vouching?
must they be vouching?

Perfect

must I have vouched?
must you have vouched?
must she have vouched?
must we have vouched?
must you have vouched?
must they have vouched?

V-ing perfect

must I have been vouching?
must you have been vouching?
must she have been vouching?
must we have been vouching?
must you have been vouching?
must they have been vouching?

Interro-negative form

Simple form

mustn't I vouch?
mustn't you vouch?
mustn't she vouch?
mustn't we vouch?
mustn't you vouch?
mustn't they vouch?

V-ing form

mustn't I be vouching?
mustn't you be vouching?
mustn't she be vouching?
mustn't we be vouching?
mustn't you be vouching?
mustn't they be vouching?

Perfect

mustn't I have vouched?
mustn't you have vouched?
mustn't she have vouched?
mustn't we have vouched?
mustn't you have vouched?
mustn't they have vouched?

V-ing perfect

mustn't I have been vouching?
mustn't you have been vouching?
mustn't she have been vouching?
mustn't we have been vouching?
mustn't you have been vouching?
mustn't they have been vouching?

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