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 must not check
you must not check
he must not check
we must not check
you must not check
they must not check

V-ing form

I must not be checking
you must not be checking
he must not be checking
we must not be checking
you must not be checking
they must not be checking

Perfect

I must not have checked
you must not have checked
he must not have checked
we must not have checked
you must not have checked
they must not have checked

V-ing perfect

I must not have been checking
you must not have been checking
he must not have been checking
we must not have been checking
you must not have been checking
they must not 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

must I not check?
must you not check?
must he not check?
must we not check?
must you not check?
must they not check?

V-ing form

must I not be checking?
must you not be checking?
must he not be checking?
must we not be checking?
must you not be checking?
must they not be checking?

Perfect

must I not have checked?
must you not have checked?
must he not have checked?
must we not have checked?
must you not have checked?
must they not have checked?

V-ing perfect

must I not have been checking?
must you not have been checking?
must he not have been checking?
must we not have been checking?
must you not have been checking?
must they not have been checking?

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