English verb conjugation MUST DECREASE

Regular verb: decrease - decreased - decreased

Affirmation

Simple form

I must decrease
you must decrease
she must decrease
we must decrease
you must decrease
they must decrease

V-ing form

I must be decreasing
you must be decreasing
she must be decreasing
we must be decreasing
you must be decreasing
they must be decreasing

Perfect

I must have decreased
you must have decreased
she must have decreased
we must have decreased
you must have decreased
they must have decreased

V-ing perfect

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

Negation

Simple form

I must not decrease
you must not decrease
she must not decrease
we must not decrease
you must not decrease
they must not decrease

V-ing form

I must not be decreasing
you must not be decreasing
she must not be decreasing
we must not be decreasing
you must not be decreasing
they must not be decreasing

Perfect

I must not have decreased
you must not have decreased
she must not have decreased
we must not have decreased
you must not have decreased
they must not have decreased

V-ing perfect

I must not have been decreasing
you must not have been decreasing
she must not have been decreasing
we must not have been decreasing
you must not have been decreasing
they must not have been decreasing

Interrogative form

Simple form

must I decrease?
must you decrease?
must she decrease?
must we decrease?
must you decrease?
must they decrease?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

must I not decrease?
must you not decrease?
must she not decrease?
must we not decrease?
must you not decrease?
must they not decrease?

V-ing form

must I not be decreasing?
must you not be decreasing?
must she not be decreasing?
must we not be decreasing?
must you not be decreasing?
must they not be decreasing?

Perfect

must I not have decreased?
must you not have decreased?
must she not have decreased?
must we not have decreased?
must you not have decreased?
must they not have decreased?

V-ing perfect

must I not have been decreasing?
must you not have been decreasing?
must she not have been decreasing?
must we not have been decreasing?
must you not have been decreasing?
must they not have been decreasing?

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