English verb conjugation MUST FLACK

Regular verb: flack - flacked - flacked

Affirmation

Simple form

I must flack
you must flack
he must flack
we must flack
you must flack
they must flack

V-ing form

I must be flacking
you must be flacking
he must be flacking
we must be flacking
you must be flacking
they must be flacking

Perfect

I must have flacked
you must have flacked
he must have flacked
we must have flacked
you must have flacked
they must have flacked

V-ing perfect

I must have been flacking
you must have been flacking
he must have been flacking
we must have been flacking
you must have been flacking
they must have been flacking

Negation

Simple form

I must not flack
you must not flack
he must not flack
we must not flack
you must not flack
they must not flack

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I flack?
must you flack?
must he flack?
must we flack?
must you flack?
must they flack?

V-ing form

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

Perfect

must I have flacked?
must you have flacked?
must he have flacked?
must we have flacked?
must you have flacked?
must they have flacked?

V-ing perfect

must I have been flacking?
must you have been flacking?
must he have been flacking?
must we have been flacking?
must you have been flacking?
must they have been flacking?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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