English verb conjugation MUST LACK LACK

Regular verb: lack lack - lack lacked - lack lacked

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form

I must lack lack
you must lack lack
he must lack lack
we must lack lack
you must lack lack
they must lack lack

V-ing form

I must be lack lacking
you must be lack lacking
he must be lack lacking
we must be lack lacking
you must be lack lacking
they must be lack lacking

Perfect

I must have lack lacked
you must have lack lacked
he must have lack lacked
we must have lack lacked
you must have lack lacked
they must have lack lacked

V-ing perfect

I must have been lack lacking
you must have been lack lacking
he must have been lack lacking
we must have been lack lacking
you must have been lack lacking
they must have been lack lacking

Negation

Simple form

I must not lack lack
you must not lack lack
he must not lack lack
we must not lack lack
you must not lack lack
they must not lack lack

V-ing form

I must not be lack lacking
you must not be lack lacking
he must not be lack lacking
we must not be lack lacking
you must not be lack lacking
they must not be lack lacking

Perfect

I must not have lack lacked
you must not have lack lacked
he must not have lack lacked
we must not have lack lacked
you must not have lack lacked
they must not have lack lacked

V-ing perfect

I must not have been lack lacking
you must not have been lack lacking
he must not have been lack lacking
we must not have been lack lacking
you must not have been lack lacking
they must not have been lack lacking

Interrogative form

Simple form

must I lack lack?
must you lack lack?
must he lack lack?
must we lack lack?
must you lack lack?
must they lack lack?

V-ing form

must I be lack lacking?
must you be lack lacking?
must he be lack lacking?
must we be lack lacking?
must you be lack lacking?
must they be lack lacking?

Perfect

must I have lack lacked?
must you have lack lacked?
must he have lack lacked?
must we have lack lacked?
must you have lack lacked?
must they have lack lacked?

V-ing perfect

must I have been lack lacking?
must you have been lack lacking?
must he have been lack lacking?
must we have been lack lacking?
must you have been lack lacking?
must they have been lack lacking?

Interro-negative form

Simple form

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

V-ing form

must I not be lack lacking?
must you not be lack lacking?
must he not be lack lacking?
must we not be lack lacking?
must you not be lack lacking?
must they not be lack lacking?

Perfect

must I not have lack lacked?
must you not have lack lacked?
must he not have lack lacked?
must we not have lack lacked?
must you not have lack lacked?
must they not have lack lacked?

V-ing perfect

must I not have been lack lacking?
must you not have been lack lacking?
must he not have been lack lacking?
must we not have been lack lacking?
must you not have been lack lacking?
must they not have been lack lacking?

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