English verb conjugation MUST UNTHREAD

Regular verb: unthread - unthreaded - unthreaded

Affirmation

Simple form

I must unthread
you must unthread
he must unthread
we must unthread
you must unthread
they must unthread

V-ing form

I must be unthreading
you must be unthreading
he must be unthreading
we must be unthreading
you must be unthreading
they must be unthreading

Perfect

I must have unthreaded
you must have unthreaded
he must have unthreaded
we must have unthreaded
you must have unthreaded
they must have unthreaded

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I unthread?
must you unthread?
must he unthread?
must we unthread?
must you unthread?
must they unthread?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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