English verb conjugation MUST BUR

Regular verb: bur - bured - bured

Affirmation

Simple form

I must bur
you must bur
she must bur
we must bur
you must bur
they must bur

V-ing form

I must be buring
you must be buring
she must be buring
we must be buring
you must be buring
they must be buring

Perfect

I must have bured
you must have bured
she must have bured
we must have bured
you must have bured
they must have bured

V-ing perfect

I must have been buring
you must have been buring
she must have been buring
we must have been buring
you must have been buring
they must have been buring

Negation

Simple form

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

V-ing form

I mustn't be buring
you mustn't be buring
she mustn't be buring
we mustn't be buring
you mustn't be buring
they mustn't be buring

Perfect

I mustn't have bured
you mustn't have bured
she mustn't have bured
we mustn't have bured
you mustn't have bured
they mustn't have bured

V-ing perfect

I mustn't have been buring
you mustn't have been buring
she mustn't have been buring
we mustn't have been buring
you mustn't have been buring
they mustn't have been buring

Interrogative form

Simple form

must I bur?
must you bur?
must she bur?
must we bur?
must you bur?
must they bur?

V-ing form

must I be buring?
must you be buring?
must she be buring?
must we be buring?
must you be buring?
must they be buring?

Perfect

must I have bured?
must you have bured?
must she have bured?
must we have bured?
must you have bured?
must they have bured?

V-ing perfect

must I have been buring?
must you have been buring?
must she have been buring?
must we have been buring?
must you have been buring?
must they have been buring?

Interro-negative form

Simple form

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

V-ing form

mustn't I be buring?
mustn't you be buring?
mustn't she be buring?
mustn't we be buring?
mustn't you be buring?
mustn't they be buring?

Perfect

mustn't I have bured?
mustn't you have bured?
mustn't she have bured?
mustn't we have bured?
mustn't you have bured?
mustn't they have bured?

V-ing perfect

mustn't I have been buring?
mustn't you have been buring?
mustn't she have been buring?
mustn't we have been buring?
mustn't you have been buring?
mustn't they have been buring?

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