English verb conjugation MUST DO DO

Regular verb: do do - do doed - do doed

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form

I must do do
you must do do
she must do do
we must do do
you must do do
they must do do

V-ing form

I must be do doing
you must be do doing
she must be do doing
we must be do doing
you must be do doing
they must be do doing

Perfect

I must have do doed
you must have do doed
she must have do doed
we must have do doed
you must have do doed
they must have do doed

V-ing perfect

I must have been do doing
you must have been do doing
she must have been do doing
we must have been do doing
you must have been do doing
they must have been do doing

Negation

Simple form

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

V-ing form

I mustn't be do doing
you mustn't be do doing
she mustn't be do doing
we mustn't be do doing
you mustn't be do doing
they mustn't be do doing

Perfect

I mustn't have do doed
you mustn't have do doed
she mustn't have do doed
we mustn't have do doed
you mustn't have do doed
they mustn't have do doed

V-ing perfect

I mustn't have been do doing
you mustn't have been do doing
she mustn't have been do doing
we mustn't have been do doing
you mustn't have been do doing
they mustn't have been do doing

Interrogative form

Simple form

must I do do?
must you do do?
must she do do?
must we do do?
must you do do?
must they do do?

V-ing form

must I be do doing?
must you be do doing?
must she be do doing?
must we be do doing?
must you be do doing?
must they be do doing?

Perfect

must I have do doed?
must you have do doed?
must she have do doed?
must we have do doed?
must you have do doed?
must they have do doed?

V-ing perfect

must I have been do doing?
must you have been do doing?
must she have been do doing?
must we have been do doing?
must you have been do doing?
must they have been do doing?

Interro-negative form

Simple form

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

V-ing form

mustn't I be do doing?
mustn't you be do doing?
mustn't she be do doing?
mustn't we be do doing?
mustn't you be do doing?
mustn't they be do doing?

Perfect

mustn't I have do doed?
mustn't you have do doed?
mustn't she have do doed?
mustn't we have do doed?
mustn't you have do doed?
mustn't they have do doed?

V-ing perfect

mustn't I have been do doing?
mustn't you have been do doing?
mustn't she have been do doing?
mustn't we have been do doing?
mustn't you have been do doing?
mustn't they have been do doing?

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