English verb conjugation MUST LETTER

Regular verb: letter - lettered - lettered

Affirmation

Simple form

I must letter
you must letter
he must letter
we must letter
you must letter
they must letter

V-ing form

I must be lettering
you must be lettering
he must be lettering
we must be lettering
you must be lettering
they must be lettering

Perfect

I must have lettered
you must have lettered
he must have lettered
we must have lettered
you must have lettered
they must have lettered

V-ing perfect

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

Negation

Simple form

I must not letter
you must not letter
he must not letter
we must not letter
you must not letter
they must not letter

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I letter?
must you letter?
must he letter?
must we letter?
must you letter?
must they letter?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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