must chapter
Verbo regular: chapter - chaptered- chaptered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must chapter
you must chapter
he must chapter
we must chapter
you must chapter
they must chapter 	I must be chaptering
you must be chaptering
he must be chaptering
we must be chaptering
you must be chaptering
they must be chaptering	I must have chaptered
you must have chaptered
he must have chaptered
we must have chaptered
you must have chaptered
they must have chaptered	I must have been chaptering
you must have been chaptering
he must have been chaptering
we must have been chaptering
you must have been chaptering
they must have been chaptering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't chapter
you mustn't chapter
he mustn't chapter
we mustn't chapter
you mustn't chapter
they mustn't chapter 	I mustn't be chaptering
you mustn't be chaptering
he mustn't be chaptering
we mustn't be chaptering
you mustn't be chaptering
they mustn't be chaptering	I mustn't have chaptered
you mustn't have chaptered
he mustn't have chaptered
we mustn't have chaptered
you mustn't have chaptered
they mustn't have chaptered	I mustn't have been chaptering
you mustn't have been chaptering
he mustn't have been chaptering
we mustn't have been chaptering
you mustn't have been chaptering
they mustn't have been chaptering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I chapter?
must you chapter?
must he chapter?
must we chapter?
must you chapter?
must they chapter? 	must I be chaptering?
must you be chaptering?
must he be chaptering?
must we be chaptering?
must you be chaptering?
must they be chaptering? 	must I have chaptered?
must you have chaptered?
must he have chaptered?
must we have chaptered?
must you have chaptered?
must they have chaptered? 	must I have been chaptering?
must you have been chaptering?
must he have been chaptering?
must we have been chaptering?
must you have been chaptering?
must they have been chaptering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I chapter?
mustn't you chapter?
mustn't he chapter?
mustn't we chapter?
mustn't you chapter?
mustn't they chapter? 	mustn't I be chaptering?
mustn't you be chaptering?
mustn't he be chaptering?
mustn't we be chaptering?
mustn't you be chaptering?
mustn't they be chaptering? 	mustn't I have chaptered?
mustn't you have chaptered?
mustn't he have chaptered?
mustn't we have chaptered?
mustn't you have chaptered?
mustn't they have chaptered? 	mustn't I have been chaptering?
mustn't you have been chaptering?
mustn't he have been chaptering?
mustn't we have been chaptering?
mustn't you have been chaptering?
mustn't they have been chaptering?