English verb conjugation MUST SIUM

Regular verb: sium - siumed - siumed

Affirmation

Simple form

I must sium
you must sium
she must sium
we must sium
you must sium
they must sium

V-ing form

I must be siuming
you must be siuming
she must be siuming
we must be siuming
you must be siuming
they must be siuming

Perfect

I must have siumed
you must have siumed
she 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
she 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
she 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
she 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
she 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
she 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 she sium?
must we sium?
must you sium?
must they sium?

V-ing form

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

Perfect

must I have siumed?
must you have siumed?
must she 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 she 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 she 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 she 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 she 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 she 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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