English verb conjugation MUST RUB

Regular verb: rub - rubbed - rubbed

Affirmation

Simple form

I must rub
you must rub
he must rub
we must rub
you must rub
they must rub

V-ing form

I must be rubbing
you must be rubbing
he must be rubbing
we must be rubbing
you must be rubbing
they must be rubbing

Perfect

I must have rubbed
you must have rubbed
he must have rubbed
we must have rubbed
you must have rubbed
they must have rubbed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I rub?
must you rub?
must he rub?
must we rub?
must you rub?
must they rub?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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