must forerun
Verbe irrégulier : forerun - foreran- forerun

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must forerun
you must forerun
he must forerun
we must forerun
you must forerun
they must forerun 	I must be foreruning
you must be foreruning
he must be foreruning
we must be foreruning
you must be foreruning
they must be foreruning	I must have forerun
you must have forerun
he must have forerun
we must have forerun
you must have forerun
they must have forerun	I must have been foreruning
you must have been foreruning
he must have been foreruning
we must have been foreruning
you must have been foreruning
they must have been foreruning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't forerun
you mustn't forerun
he mustn't forerun
we mustn't forerun
you mustn't forerun
they mustn't forerun 	I mustn't be foreruning
you mustn't be foreruning
he mustn't be foreruning
we mustn't be foreruning
you mustn't be foreruning
they mustn't be foreruning	I mustn't have forerun
you mustn't have forerun
he mustn't have forerun
we mustn't have forerun
you mustn't have forerun
they mustn't have forerun	I mustn't have been foreruning
you mustn't have been foreruning
he mustn't have been foreruning
we mustn't have been foreruning
you mustn't have been foreruning
they mustn't have been foreruning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I forerun?
must you forerun?
must he forerun?
must we forerun?
must you forerun?
must they forerun? 	must I be foreruning?
must you be foreruning?
must he be foreruning?
must we be foreruning?
must you be foreruning?
must they be foreruning? 	must I have forerun?
must you have forerun?
must he have forerun?
must we have forerun?
must you have forerun?
must they have forerun? 	must I have been foreruning?
must you have been foreruning?
must he have been foreruning?
must we have been foreruning?
must you have been foreruning?
must they have been foreruning? 	

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