English verb conjugation MUST LEATHER

Regular verb: leather - leathered - leathered

Affirmation

Simple form

I must leather
you must leather
he must leather
we must leather
you must leather
they must leather

V-ing form

I must be leathering
you must be leathering
he must be leathering
we must be leathering
you must be leathering
they must be leathering

Perfect

I must have leathered
you must have leathered
he must have leathered
we must have leathered
you must have leathered
they must have leathered

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I leather?
must you leather?
must he leather?
must we leather?
must you leather?
must they leather?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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