English verb conjugation MUST THUMBTACK

Regular verb: thumbtack - thumbtacked - thumbtacked

Affirmation

Simple form

I must thumbtack
you must thumbtack
she must thumbtack
we must thumbtack
you must thumbtack
they must thumbtack

V-ing form

I must be thumbtacking
you must be thumbtacking
she must be thumbtacking
we must be thumbtacking
you must be thumbtacking
they must be thumbtacking

Perfect

I must have thumbtacked
you must have thumbtacked
she must have thumbtacked
we must have thumbtacked
you must have thumbtacked
they must have thumbtacked

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I thumbtack?
must you thumbtack?
must she thumbtack?
must we thumbtack?
must you thumbtack?
must they thumbtack?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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