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 must not leather
you must not leather
she must not leather
we must not leather
you must not leather
they must not leather

V-ing form

I must not be leathering
you must not be leathering
she must not be leathering
we must not be leathering
you must not be leathering
they must not be leathering

Perfect

I must not have leathered
you must not have leathered
she must not have leathered
we must not have leathered
you must not have leathered
they must not have leathered

V-ing perfect

I must not have been leathering
you must not have been leathering
she must not have been leathering
we must not have been leathering
you must not have been leathering
they must not 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

must I not leather?
must you not leather?
must she not leather?
must we not leather?
must you not leather?
must they not leather?

V-ing form

must I not be leathering?
must you not be leathering?
must she not be leathering?
must we not be leathering?
must you not be leathering?
must they not be leathering?

Perfect

must I not have leathered?
must you not have leathered?
must she not have leathered?
must we not have leathered?
must you not have leathered?
must they not have leathered?

V-ing perfect

must I not have been leathering?
must you not have been leathering?
must she not have been leathering?
must we not have been leathering?
must you not have been leathering?
must they not have been leathering?

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