English verb conjugation MUST COMMENCE

Regular verb: commence - commenced - commenced

Affirmation

Simple form

I must commence
you must commence
he must commence
we must commence
you must commence
they must commence

V-ing form

I must be commencing
you must be commencing
he must be commencing
we must be commencing
you must be commencing
they must be commencing

Perfect

I must have commenced
you must have commenced
he must have commenced
we must have commenced
you must have commenced
they must have commenced

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I commence?
must you commence?
must he commence?
must we commence?
must you commence?
must they commence?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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