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 mustn't couch
you mustn't couch
he mustn't couch
we mustn't couch
you mustn't couch
they mustn't couch

V-ing form

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

Perfect

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

V-ing perfect

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

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

V-ing form

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

Perfect

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

V-ing perfect

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

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