English verb conjugation MUST UNTIE

Regular verb: untie - untied - untied

Affirmation

Simple form

I must untie
you must untie
she must untie
we must untie
you must untie
they must untie

V-ing form

I must be untying
you must be untying
she must be untying
we must be untying
you must be untying
they must be untying

Perfect

I must have untied
you must have untied
she must have untied
we must have untied
you must have untied
they must have untied

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I untie?
must you untie?
must she untie?
must we untie?
must you untie?
must they untie?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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