English verb conjugation MUST BACKPACK

Regular verb: backpack - backpacked - backpacked

Affirmation

Simple form

I must backpack
you must backpack
he must backpack
we must backpack
you must backpack
they must backpack

V-ing form

I must be backpacking
you must be backpacking
he must be backpacking
we must be backpacking
you must be backpacking
they must be backpacking

Perfect

I must have backpacked
you must have backpacked
he must have backpacked
we must have backpacked
you must have backpacked
they must have backpacked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I backpack?
must you backpack?
must he backpack?
must we backpack?
must you backpack?
must they backpack?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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