must pain
Verbe régulier : pain - pained- pained
Traduction française : peiner - faire souffrir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must pain
you must pain
he must pain
we must pain
you must pain
they must pain 	I must be paining
you must be paining
he must be paining
we must be paining
you must be paining
they must be paining	I must have pained
you must have pained
he must have pained
we must have pained
you must have pained
they must have pained	I must have been paining
you must have been paining
he must have been paining
we must have been paining
you must have been paining
they must have been paining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't pain
you mustn't pain
he mustn't pain
we mustn't pain
you mustn't pain
they mustn't pain 	I mustn't be paining
you mustn't be paining
he mustn't be paining
we mustn't be paining
you mustn't be paining
they mustn't be paining	I mustn't have pained
you mustn't have pained
he mustn't have pained
we mustn't have pained
you mustn't have pained
they mustn't have pained	I mustn't have been paining
you mustn't have been paining
he mustn't have been paining
we mustn't have been paining
you mustn't have been paining
they mustn't have been paining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I pain?
must you pain?
must he pain?
must we pain?
must you pain?
must they pain? 	must I be paining?
must you be paining?
must he be paining?
must we be paining?
must you be paining?
must they be paining? 	must I have pained?
must you have pained?
must he have pained?
must we have pained?
must you have pained?
must they have pained? 	must I have been paining?
must you have been paining?
must he have been paining?
must we have been paining?
must you have been paining?
must they have been paining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I pain?
mustn't you pain?
mustn't he pain?
mustn't we pain?
mustn't you pain?
mustn't they pain? 	mustn't I be paining?
mustn't you be paining?
mustn't he be paining?
mustn't we be paining?
mustn't you be paining?
mustn't they be paining? 	mustn't I have pained?
mustn't you have pained?
mustn't he have pained?
mustn't we have pained?
mustn't you have pained?
mustn't they have pained? 	mustn't I have been paining?
mustn't you have been paining?
mustn't he have been paining?
mustn't we have been paining?
mustn't you have been paining?
mustn't they have been paining?