English verb conjugation MUST MOTHBALL

Regular verb: mothball - mothballed - mothballed

Affirmation

Simple form

I must mothball
you must mothball
he must mothball
we must mothball
you must mothball
they must mothball

V-ing form

I must be mothballing
you must be mothballing
he must be mothballing
we must be mothballing
you must be mothballing
they must be mothballing

Perfect

I must have mothballed
you must have mothballed
he must have mothballed
we must have mothballed
you must have mothballed
they must have mothballed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I mothball?
must you mothball?
must he mothball?
must we mothball?
must you mothball?
must they mothball?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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