English verb conjugation MUST STUB

Regular verb: stub - stubbed - stubbed

Affirmation

Simple form

I must stub
you must stub
he must stub
we must stub
you must stub
they must stub

V-ing form

I must be stubbing
you must be stubbing
he must be stubbing
we must be stubbing
you must be stubbing
they must be stubbing

Perfect

I must have stubbed
you must have stubbed
he must have stubbed
we must have stubbed
you must have stubbed
they must have stubbed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I stub?
must you stub?
must he stub?
must we stub?
must you stub?
must they stub?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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