English verb conjugation MUST LEATHER

Regular verb: leather - leathered - leathered

Affirmation

Simple form

I must leather
you must leather
she must leather
we must leather
you must leather
they must leather

V-ing form

I must be leathering
you must be leathering
she must be leathering
we must be leathering
you must be leathering
they must be leathering

Perfect

I must have leathered
you must have leathered
she 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
she 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
she 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
she 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
she 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
she 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 she leather?
must we leather?
must you leather?
must they leather?

V-ing form

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

Perfect

must I have leathered?
must you have leathered?
must she 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 she 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 she 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 she 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 she 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 she 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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