must leather
Verbo regular: leather - leathered- leathered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must leather
you must leather
he must leather
we must leather
you must leather
they must leather 	I must be leathering
you must be leathering
he must be leathering
we must be leathering
you must be leathering
they must be leathering	I must have leathered
you must have leathered
he must have leathered
we must have leathered
you must have leathered
they must have leathered	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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't leather
you mustn't leather
he mustn't leather
we mustn't leather
you mustn't leather
they mustn't leather 	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	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	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	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I leather?
must you leather?
must he leather?
must we leather?
must you leather?
must they leather? 	must I be leathering?
must you be leathering?
must he be leathering?
must we be leathering?
must you be leathering?
must they be leathering? 	must I have leathered?
must you have leathered?
must he have leathered?
must we have leathered?
must you have leathered?
must they have leathered? 	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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I leather?
mustn't you leather?
mustn't he leather?
mustn't we leather?
mustn't you leather?
mustn't they leather? 	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? 	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? 	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?