English verb conjugation MUST STAMP

Regular verb: stamp - stamped - stamped

Affirmation

Simple form

I must stamp
you must stamp
he must stamp
we must stamp
you must stamp
they must stamp

V-ing form

I must be stamping
you must be stamping
he must be stamping
we must be stamping
you must be stamping
they must be stamping

Perfect

I must have stamped
you must have stamped
he must have stamped
we must have stamped
you must have stamped
they must have stamped

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I stamp?
must you stamp?
must he stamp?
must we stamp?
must you stamp?
must they stamp?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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