English verb conjugation MUST CLENCH

Regular verb: clench - clenched - clenched

Affirmation

Simple form

I must clench
you must clench
he must clench
we must clench
you must clench
they must clench

V-ing form

I must be clenching
you must be clenching
he must be clenching
we must be clenching
you must be clenching
they must be clenching

Perfect

I must have clenched
you must have clenched
he must have clenched
we must have clenched
you must have clenched
they must have clenched

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I clench?
must you clench?
must he clench?
must we clench?
must you clench?
must they clench?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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