English verb conjugation MUST SIUM

Regular verb: sium - siumed - siumed

Affirmation

Simple form

I must sium
you must sium
he must sium
we must sium
you must sium
they must sium

V-ing form

I must be siuming
you must be siuming
he must be siuming
we must be siuming
you must be siuming
they must be siuming

Perfect

I must have siumed
you must have siumed
he must have siumed
we must have siumed
you must have siumed
they must have siumed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I sium?
must you sium?
must he sium?
must we sium?
must you sium?
must they sium?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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