English verb conjugation MUST BURP

Regular verb: burp - burped - burped

Affirmation

Simple form

I must burp
you must burp
he must burp
we must burp
you must burp
they must burp

V-ing form

I must be burping
you must be burping
he must be burping
we must be burping
you must be burping
they must be burping

Perfect

I must have burped
you must have burped
he must have burped
we must have burped
you must have burped
they must have burped

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I burp?
must you burp?
must he burp?
must we burp?
must you burp?
must they burp?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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