must barter
Verbo regular: barter - bartered- bartered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must barter
you must barter
he must barter
we must barter
you must barter
they must barter 	I must be bartering
you must be bartering
he must be bartering
we must be bartering
you must be bartering
they must be bartering	I must have bartered
you must have bartered
he must have bartered
we must have bartered
you must have bartered
they must have bartered	I must have been bartering
you must have been bartering
he must have been bartering
we must have been bartering
you must have been bartering
they must have been bartering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't barter
you mustn't barter
he mustn't barter
we mustn't barter
you mustn't barter
they mustn't barter 	I mustn't be bartering
you mustn't be bartering
he mustn't be bartering
we mustn't be bartering
you mustn't be bartering
they mustn't be bartering	I mustn't have bartered
you mustn't have bartered
he mustn't have bartered
we mustn't have bartered
you mustn't have bartered
they mustn't have bartered	I mustn't have been bartering
you mustn't have been bartering
he mustn't have been bartering
we mustn't have been bartering
you mustn't have been bartering
they mustn't have been bartering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I barter?
must you barter?
must he barter?
must we barter?
must you barter?
must they barter? 	must I be bartering?
must you be bartering?
must he be bartering?
must we be bartering?
must you be bartering?
must they be bartering? 	must I have bartered?
must you have bartered?
must he have bartered?
must we have bartered?
must you have bartered?
must they have bartered? 	must I have been bartering?
must you have been bartering?
must he have been bartering?
must we have been bartering?
must you have been bartering?
must they have been bartering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I barter?
mustn't you barter?
mustn't he barter?
mustn't we barter?
mustn't you barter?
mustn't they barter? 	mustn't I be bartering?
mustn't you be bartering?
mustn't he be bartering?
mustn't we be bartering?
mustn't you be bartering?
mustn't they be bartering? 	mustn't I have bartered?
mustn't you have bartered?
mustn't he have bartered?
mustn't we have bartered?
mustn't you have bartered?
mustn't they have bartered? 	mustn't I have been bartering?
mustn't you have been bartering?
mustn't he have been bartering?
mustn't we have been bartering?
mustn't you have been bartering?
mustn't they have been bartering?