English verb conjugation MUST CRAB

Regular verb: crab - crabbed - crabbed

Affirmation

Simple form

I must crab
you must crab
he must crab
we must crab
you must crab
they must crab

V-ing form

I must be crabbing
you must be crabbing
he must be crabbing
we must be crabbing
you must be crabbing
they must be crabbing

Perfect

I must have crabbed
you must have crabbed
he must have crabbed
we must have crabbed
you must have crabbed
they must have crabbed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I crab?
must you crab?
must he crab?
must we crab?
must you crab?
must they crab?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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