English verb conjugation MUST YEN

Regular verb: yen - yenned - yenned

Affirmation

Simple form

I must yen
you must yen
he must yen
we must yen
you must yen
they must yen

V-ing form

I must be yenning
you must be yenning
he must be yenning
we must be yenning
you must be yenning
they must be yenning

Perfect

I must have yenned
you must have yenned
he must have yenned
we must have yenned
you must have yenned
they must have yenned

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I yen?
must you yen?
must he yen?
must we yen?
must you yen?
must they yen?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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