English verb conjugation MUST DECUPLE

Regular verb: decuple - decupled - decupled

Affirmation

Simple form

I must decuple
you must decuple
he must decuple
we must decuple
you must decuple
they must decuple

V-ing form

I must be decupling
you must be decupling
he must be decupling
we must be decupling
you must be decupling
they must be decupling

Perfect

I must have decupled
you must have decupled
he must have decupled
we must have decupled
you must have decupled
they must have decupled

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I decuple?
must you decuple?
must he decuple?
must we decuple?
must you decuple?
must they decuple?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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