English verb conjugation MUST THREAD

Regular verb: thread - threaded - threaded

Affirmation

Simple form

I must thread
you must thread
she must thread
we must thread
you must thread
they must thread

V-ing form

I must be threading
you must be threading
she must be threading
we must be threading
you must be threading
they must be threading

Perfect

I must have threaded
you must have threaded
she must have threaded
we must have threaded
you must have threaded
they must have threaded

V-ing perfect

I must have been threading
you must have been threading
she must have been threading
we must have been threading
you must have been threading
they must have been threading

Negation

Simple form

I mustn't thread
you mustn't thread
she mustn't thread
we mustn't thread
you mustn't thread
they mustn't thread

V-ing form

I mustn't be threading
you mustn't be threading
she mustn't be threading
we mustn't be threading
you mustn't be threading
they mustn't be threading

Perfect

I mustn't have threaded
you mustn't have threaded
she mustn't have threaded
we mustn't have threaded
you mustn't have threaded
they mustn't have threaded

V-ing perfect

I mustn't have been threading
you mustn't have been threading
she mustn't have been threading
we mustn't have been threading
you mustn't have been threading
they mustn't have been threading

Interrogative form

Simple form

must I thread?
must you thread?
must she thread?
must we thread?
must you thread?
must they thread?

V-ing form

must I be threading?
must you be threading?
must she be threading?
must we be threading?
must you be threading?
must they be threading?

Perfect

must I have threaded?
must you have threaded?
must she have threaded?
must we have threaded?
must you have threaded?
must they have threaded?

V-ing perfect

must I have been threading?
must you have been threading?
must she have been threading?
must we have been threading?
must you have been threading?
must they have been threading?

Interro-negative form

Simple form

mustn't I thread?
mustn't you thread?
mustn't she thread?
mustn't we thread?
mustn't you thread?
mustn't they thread?

V-ing form

mustn't I be threading?
mustn't you be threading?
mustn't she be threading?
mustn't we be threading?
mustn't you be threading?
mustn't they be threading?

Perfect

mustn't I have threaded?
mustn't you have threaded?
mustn't she have threaded?
mustn't we have threaded?
mustn't you have threaded?
mustn't they have threaded?

V-ing perfect

mustn't I have been threading?
mustn't you have been threading?
mustn't she have been threading?
mustn't we have been threading?
mustn't you have been threading?
mustn't they have been threading?

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