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 must not burp
you must not burp
he must not burp
we must not burp
you must not burp
they must not burp

V-ing form

I must not be burping
you must not be burping
he must not be burping
we must not be burping
you must not be burping
they must not be burping

Perfect

I must not have burped
you must not have burped
he must not have burped
we must not have burped
you must not have burped
they must not have burped

V-ing perfect

I must not have been burping
you must not have been burping
he must not have been burping
we must not have been burping
you must not have been burping
they must not 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

must I not burp?
must you not burp?
must he not burp?
must we not burp?
must you not burp?
must they not burp?

V-ing form

must I not be burping?
must you not be burping?
must he not be burping?
must we not be burping?
must you not be burping?
must they not be burping?

Perfect

must I not have burped?
must you not have burped?
must he not have burped?
must we not have burped?
must you not have burped?
must they not have burped?

V-ing perfect

must I not have been burping?
must you not have been burping?
must he not have been burping?
must we not have been burping?
must you not have been burping?
must they not have been burping?

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