English verb conjugation MUST SPY

Regular verb: spy - spied - spied

Affirmation

Simple form

I must spy
you must spy
he must spy
we must spy
you must spy
they must spy

V-ing form

I must be spying
you must be spying
he must be spying
we must be spying
you must be spying
they must be spying

Perfect

I must have spied
you must have spied
he must have spied
we must have spied
you must have spied
they must have spied

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I spy?
must you spy?
must he spy?
must we spy?
must you spy?
must they spy?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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