must cochair
Verbe régulier : cochair - cochaired- cochaired

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must cochair
you must cochair
he must cochair
we must cochair
you must cochair
they must cochair 	I must be cochairing
you must be cochairing
he must be cochairing
we must be cochairing
you must be cochairing
they must be cochairing	I must have cochaired
you must have cochaired
he must have cochaired
we must have cochaired
you must have cochaired
they must have cochaired	I must have been cochairing
you must have been cochairing
he must have been cochairing
we must have been cochairing
you must have been cochairing
they must have been cochairing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't cochair
you mustn't cochair
he mustn't cochair
we mustn't cochair
you mustn't cochair
they mustn't cochair 	I mustn't be cochairing
you mustn't be cochairing
he mustn't be cochairing
we mustn't be cochairing
you mustn't be cochairing
they mustn't be cochairing	I mustn't have cochaired
you mustn't have cochaired
he mustn't have cochaired
we mustn't have cochaired
you mustn't have cochaired
they mustn't have cochaired	I mustn't have been cochairing
you mustn't have been cochairing
he mustn't have been cochairing
we mustn't have been cochairing
you mustn't have been cochairing
they mustn't have been cochairing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I cochair?
must you cochair?
must he cochair?
must we cochair?
must you cochair?
must they cochair? 	must I be cochairing?
must you be cochairing?
must he be cochairing?
must we be cochairing?
must you be cochairing?
must they be cochairing? 	must I have cochaired?
must you have cochaired?
must he have cochaired?
must we have cochaired?
must you have cochaired?
must they have cochaired? 	must I have been cochairing?
must you have been cochairing?
must he have been cochairing?
must we have been cochairing?
must you have been cochairing?
must they have been cochairing? 	

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