English verb conjugation MUST THUMBTACK

Regular verb: thumbtack - thumbtacked - thumbtacked

Affirmation

Simple form

I must thumbtack
you must thumbtack
he must thumbtack
we must thumbtack
you must thumbtack
they must thumbtack

V-ing form

I must be thumbtacking
you must be thumbtacking
he must be thumbtacking
we must be thumbtacking
you must be thumbtacking
they must be thumbtacking

Perfect

I must have thumbtacked
you must have thumbtacked
he 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
he must have been thumbtacking
we must have been thumbtacking
you must have been thumbtacking
they must have been thumbtacking

Negation

Simple form

I must not thumbtack
you must not thumbtack
he must not thumbtack
we must not thumbtack
you must not thumbtack
they must not thumbtack

V-ing form

I must not be thumbtacking
you must not be thumbtacking
he must not be thumbtacking
we must not be thumbtacking
you must not be thumbtacking
they must not be thumbtacking

Perfect

I must not have thumbtacked
you must not have thumbtacked
he must not have thumbtacked
we must not have thumbtacked
you must not have thumbtacked
they must not have thumbtacked

V-ing perfect

I must not have been thumbtacking
you must not have been thumbtacking
he must not have been thumbtacking
we must not have been thumbtacking
you must not have been thumbtacking
they must not have been thumbtacking

Interrogative form

Simple form

must I thumbtack?
must you thumbtack?
must he thumbtack?
must we thumbtack?
must you thumbtack?
must they thumbtack?

V-ing form

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

Perfect

must I have thumbtacked?
must you have thumbtacked?
must he 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 he have been thumbtacking?
must we have been thumbtacking?
must you have been thumbtacking?
must they have been thumbtacking?

Interro-negative form

Simple form

must I not thumbtack?
must you not thumbtack?
must he not thumbtack?
must we not thumbtack?
must you not thumbtack?
must they not thumbtack?

V-ing form

must I not be thumbtacking?
must you not be thumbtacking?
must he not be thumbtacking?
must we not be thumbtacking?
must you not be thumbtacking?
must they not be thumbtacking?

Perfect

must I not have thumbtacked?
must you not have thumbtacked?
must he not have thumbtacked?
must we not have thumbtacked?
must you not have thumbtacked?
must they not have thumbtacked?

V-ing perfect

must I not have been thumbtacking?
must you not have been thumbtacking?
must he not have been thumbtacking?
must we not have been thumbtacking?
must you not have been thumbtacking?
must they not have been thumbtacking?

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