English verb conjugation MUST BURN

Regular verb: burn - burned - burned

Affirmation

Simple form

I must burn
you must burn
she must burn
we must burn
you must burn
they must burn

V-ing form

I must be burning
you must be burning
she must be burning
we must be burning
you must be burning
they must be burning

Perfect

I must have burned
you must have burned
she must have burned
we must have burned
you must have burned
they must have burned

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I burn?
must you burn?
must she burn?
must we burn?
must you burn?
must they burn?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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