English verb conjugation MUST STRAITEN

Regular verb: straiten - straitened - straitened

Affirmation

Simple form

I must straiten
you must straiten
she must straiten
we must straiten
you must straiten
they must straiten

V-ing form

I must be straitening
you must be straitening
she must be straitening
we must be straitening
you must be straitening
they must be straitening

Perfect

I must have straitened
you must have straitened
she must have straitened
we must have straitened
you must have straitened
they must have straitened

V-ing perfect

I must have been straitening
you must have been straitening
she must have been straitening
we must have been straitening
you must have been straitening
they must have been straitening

Negation

Simple form

I mustn't straiten
you mustn't straiten
she mustn't straiten
we mustn't straiten
you mustn't straiten
they mustn't straiten

V-ing form

I mustn't be straitening
you mustn't be straitening
she mustn't be straitening
we mustn't be straitening
you mustn't be straitening
they mustn't be straitening

Perfect

I mustn't have straitened
you mustn't have straitened
she mustn't have straitened
we mustn't have straitened
you mustn't have straitened
they mustn't have straitened

V-ing perfect

I mustn't have been straitening
you mustn't have been straitening
she mustn't have been straitening
we mustn't have been straitening
you mustn't have been straitening
they mustn't have been straitening

Interrogative form

Simple form

must I straiten?
must you straiten?
must she straiten?
must we straiten?
must you straiten?
must they straiten?

V-ing form

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

Perfect

must I have straitened?
must you have straitened?
must she have straitened?
must we have straitened?
must you have straitened?
must they have straitened?

V-ing perfect

must I have been straitening?
must you have been straitening?
must she have been straitening?
must we have been straitening?
must you have been straitening?
must they have been straitening?

Interro-negative form

Simple form

mustn't I straiten?
mustn't you straiten?
mustn't she straiten?
mustn't we straiten?
mustn't you straiten?
mustn't they straiten?

V-ing form

mustn't I be straitening?
mustn't you be straitening?
mustn't she be straitening?
mustn't we be straitening?
mustn't you be straitening?
mustn't they be straitening?

Perfect

mustn't I have straitened?
mustn't you have straitened?
mustn't she have straitened?
mustn't we have straitened?
mustn't you have straitened?
mustn't they have straitened?

V-ing perfect

mustn't I have been straitening?
mustn't you have been straitening?
mustn't she have been straitening?
mustn't we have been straitening?
mustn't you have been straitening?
mustn't they have been straitening?

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