must pile
Verbe régulier : pile - piled- piled
Traduction française : empiler - monter ou descendre en bousculant 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must pile
you must pile
she must pile
we must pile
you must pile
they must pile 	I must be piling
you must be piling
she must be piling
we must be piling
you must be piling
they must be piling	I must have piled
you must have piled
she must have piled
we must have piled
you must have piled
they must have piled	I must have been piling
you must have been piling
she must have been piling
we must have been piling
you must have been piling
they must have been piling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't pile
you mustn't pile
she mustn't pile
we mustn't pile
you mustn't pile
they mustn't pile 	I mustn't be piling
you mustn't be piling
she mustn't be piling
we mustn't be piling
you mustn't be piling
they mustn't be piling	I mustn't have piled
you mustn't have piled
she mustn't have piled
we mustn't have piled
you mustn't have piled
they mustn't have piled	I mustn't have been piling
you mustn't have been piling
she mustn't have been piling
we mustn't have been piling
you mustn't have been piling
they mustn't have been piling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I pile?
must you pile?
must she pile?
must we pile?
must you pile?
must they pile? 	must I be piling?
must you be piling?
must she be piling?
must we be piling?
must you be piling?
must they be piling? 	must I have piled?
must you have piled?
must she have piled?
must we have piled?
must you have piled?
must they have piled? 	must I have been piling?
must you have been piling?
must she have been piling?
must we have been piling?
must you have been piling?
must they have been piling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I pile?
mustn't you pile?
mustn't she pile?
mustn't we pile?
mustn't you pile?
mustn't they pile? 	mustn't I be piling?
mustn't you be piling?
mustn't she be piling?
mustn't we be piling?
mustn't you be piling?
mustn't they be piling? 	mustn't I have piled?
mustn't you have piled?
mustn't she have piled?
mustn't we have piled?
mustn't you have piled?
mustn't they have piled? 	mustn't I have been piling?
mustn't you have been piling?
mustn't she have been piling?
mustn't we have been piling?
mustn't you have been piling?
mustn't they have been piling?