English verb conjugation MUST SMOOTHEN

Regular verb: smoothen - smoothened - smoothened

Affirmation

Simple form

I must smoothen
you must smoothen
he must smoothen
we must smoothen
you must smoothen
they must smoothen

V-ing form

I must be smoothening
you must be smoothening
he must be smoothening
we must be smoothening
you must be smoothening
they must be smoothening

Perfect

I must have smoothened
you must have smoothened
he must have smoothened
we must have smoothened
you must have smoothened
they must have smoothened

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I smoothen?
must you smoothen?
must he smoothen?
must we smoothen?
must you smoothen?
must they smoothen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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