English verb conjugation MUST COUCH

Regular verb: couch - couched - couched

Affirmation

Simple form

I must couch
you must couch
he must couch
we must couch
you must couch
they must couch

V-ing form

I must be couching
you must be couching
he must be couching
we must be couching
you must be couching
they must be couching

Perfect

I must have couched
you must have couched
he must have couched
we must have couched
you must have couched
they must have couched

V-ing perfect

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

Negation

Simple form

I must not couch
you must not couch
he must not couch
we must not couch
you must not couch
they must not couch

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I couch?
must you couch?
must he couch?
must we couch?
must you couch?
must they couch?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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