must ration
Verbo regular: ration - rationed- rationed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must ration
you must ration
he must ration
we must ration
you must ration
they must ration 	I must be rationing
you must be rationing
he must be rationing
we must be rationing
you must be rationing
they must be rationing	I must have rationed
you must have rationed
he must have rationed
we must have rationed
you must have rationed
they must have rationed	I must have been rationing
you must have been rationing
he must have been rationing
we must have been rationing
you must have been rationing
they must have been rationing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't ration
you mustn't ration
he mustn't ration
we mustn't ration
you mustn't ration
they mustn't ration 	I mustn't be rationing
you mustn't be rationing
he mustn't be rationing
we mustn't be rationing
you mustn't be rationing
they mustn't be rationing	I mustn't have rationed
you mustn't have rationed
he mustn't have rationed
we mustn't have rationed
you mustn't have rationed
they mustn't have rationed	I mustn't have been rationing
you mustn't have been rationing
he mustn't have been rationing
we mustn't have been rationing
you mustn't have been rationing
they mustn't have been rationing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I ration?
must you ration?
must he ration?
must we ration?
must you ration?
must they ration? 	must I be rationing?
must you be rationing?
must he be rationing?
must we be rationing?
must you be rationing?
must they be rationing? 	must I have rationed?
must you have rationed?
must he have rationed?
must we have rationed?
must you have rationed?
must they have rationed? 	must I have been rationing?
must you have been rationing?
must he have been rationing?
must we have been rationing?
must you have been rationing?
must they have been rationing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I ration?
mustn't you ration?
mustn't he ration?
mustn't we ration?
mustn't you ration?
mustn't they ration? 	mustn't I be rationing?
mustn't you be rationing?
mustn't he be rationing?
mustn't we be rationing?
mustn't you be rationing?
mustn't they be rationing? 	mustn't I have rationed?
mustn't you have rationed?
mustn't he have rationed?
mustn't we have rationed?
mustn't you have rationed?
mustn't they have rationed? 	mustn't I have been rationing?
mustn't you have been rationing?
mustn't he have been rationing?
mustn't we have been rationing?
mustn't you have been rationing?
mustn't they have been rationing?