English verb conjugation MUST BURROW

Regular verb: burrow - burrowed - burrowed

Affirmation

Simple form

I must burrow
you must burrow
he must burrow
we must burrow
you must burrow
they must burrow

V-ing form

I must be burrowing
you must be burrowing
he must be burrowing
we must be burrowing
you must be burrowing
they must be burrowing

Perfect

I must have burrowed
you must have burrowed
he must have burrowed
we must have burrowed
you must have burrowed
they must have burrowed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I burrow?
must you burrow?
must he burrow?
must we burrow?
must you burrow?
must they burrow?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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