English verb conjugation MUST CHECK

Regular verb: check - checked - checked

Affirmation

Simple form

I must check
you must check
he must check
we must check
you must check
they must check

V-ing form

I must be checking
you must be checking
he must be checking
we must be checking
you must be checking
they must be checking

Perfect

I must have checked
you must have checked
he must have checked
we must have checked
you must have checked
they must have checked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I check?
must you check?
must he check?
must we check?
must you check?
must they check?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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