English verb conjugation MUST LESSEN

Regular verb: lessen - lessened - lessened

Affirmation

Simple form

I must lessen
you must lessen
he must lessen
we must lessen
you must lessen
they must lessen

V-ing form

I must be lessening
you must be lessening
he must be lessening
we must be lessening
you must be lessening
they must be lessening

Perfect

I must have lessened
you must have lessened
he must have lessened
we must have lessened
you must have lessened
they must have lessened

V-ing perfect

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

Negation

Simple form

I mustn't lessen
you mustn't lessen
he mustn't lessen
we mustn't lessen
you mustn't lessen
they mustn't lessen

V-ing form

I mustn't be lessening
you mustn't be lessening
he mustn't be lessening
we mustn't be lessening
you mustn't be lessening
they mustn't be lessening

Perfect

I mustn't have lessened
you mustn't have lessened
he mustn't have lessened
we mustn't have lessened
you mustn't have lessened
they mustn't have lessened

V-ing perfect

I mustn't have been lessening
you mustn't have been lessening
he mustn't have been lessening
we mustn't have been lessening
you mustn't have been lessening
they mustn't have been lessening

Interrogative form

Simple form

must I lessen?
must you lessen?
must he lessen?
must we lessen?
must you lessen?
must they lessen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

mustn't I lessen?
mustn't you lessen?
mustn't he lessen?
mustn't we lessen?
mustn't you lessen?
mustn't they lessen?

V-ing form

mustn't I be lessening?
mustn't you be lessening?
mustn't he be lessening?
mustn't we be lessening?
mustn't you be lessening?
mustn't they be lessening?

Perfect

mustn't I have lessened?
mustn't you have lessened?
mustn't he have lessened?
mustn't we have lessened?
mustn't you have lessened?
mustn't they have lessened?

V-ing perfect

mustn't I have been lessening?
mustn't you have been lessening?
mustn't he have been lessening?
mustn't we have been lessening?
mustn't you have been lessening?
mustn't they have been lessening?

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