English verb conjugation MUST LOCK

Regular verb: lock - locked - locked

Affirmation

Simple form

I must lock
you must lock
he must lock
we must lock
you must lock
they must lock

V-ing form

I must be locking
you must be locking
he must be locking
we must be locking
you must be locking
they must be locking

Perfect

I must have locked
you must have locked
he must have locked
we must have locked
you must have locked
they must have locked

V-ing perfect

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

Negation

Simple form

I must not lock
you must not lock
he must not lock
we must not lock
you must not lock
they must not lock

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I lock?
must you lock?
must he lock?
must we lock?
must you lock?
must they lock?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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