English verb conjugation MUST CLACK

Regular verb: clack - clacked - clacked

Affirmation

Simple form

I must clack
you must clack
he must clack
we must clack
you must clack
they must clack

V-ing form

I must be clacking
you must be clacking
he must be clacking
we must be clacking
you must be clacking
they must be clacking

Perfect

I must have clacked
you must have clacked
he must have clacked
we must have clacked
you must have clacked
they must have clacked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I clack?
must you clack?
must he clack?
must we clack?
must you clack?
must they clack?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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