English verb conjugation MUST GRUMBLE

Regular verb: grumble - grumbled - grumbled

Affirmation

Simple form

I must grumble
you must grumble
she must grumble
we must grumble
you must grumble
they must grumble

V-ing form

I must be grumbling
you must be grumbling
she must be grumbling
we must be grumbling
you must be grumbling
they must be grumbling

Perfect

I must have grumbled
you must have grumbled
she must have grumbled
we must have grumbled
you must have grumbled
they must have grumbled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I grumble?
must you grumble?
must she grumble?
must we grumble?
must you grumble?
must they grumble?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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