English verb conjugation MUST HARSHEN

Regular verb: harshen - harshened - harshened

Affirmation

Simple form

I must harshen
you must harshen
he must harshen
we must harshen
you must harshen
they must harshen

V-ing form

I must be harshening
you must be harshening
he must be harshening
we must be harshening
you must be harshening
they must be harshening

Perfect

I must have harshened
you must have harshened
he must have harshened
we must have harshened
you must have harshened
they must have harshened

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I harshen?
must you harshen?
must he harshen?
must we harshen?
must you harshen?
must they harshen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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