could mass
Verbe régulier : mass - massed- massed
Traduction française : se masser - masser 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could mass
you could mass
she could mass
we could mass
you could mass
they could mass 	I could be massing
you could be massing
she could be massing
we could be massing
you could be massing
they could be massing	I could have massed
you could have massed
she could have massed
we could have massed
you could have massed
they could have massed	I could have been massing
you could have been massing
she could have been massing
we could have been massing
you could have been massing
they could have been massing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't mass
you couldn't mass
she couldn't mass
we couldn't mass
you couldn't mass
they couldn't mass 	I couldn't be massing
you couldn't be massing
she couldn't be massing
we couldn't be massing
you couldn't be massing
they couldn't be massing	I couldn't have massed
you couldn't have massed
she couldn't have massed
we couldn't have massed
you couldn't have massed
they couldn't have massed	I couldn't have been massing
you couldn't have been massing
she couldn't have been massing
we couldn't have been massing
you couldn't have been massing
they couldn't have been massing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I mass?
could you mass?
could she mass?
could we mass?
could you mass?
could they mass? 	could I be massing?
could you be massing?
could she be massing?
could we be massing?
could you be massing?
could they be massing? 	could I have massed?
could you have massed?
could she have massed?
could we have massed?
could you have massed?
could they have massed? 	could I have been massing?
could you have been massing?
could she have been massing?
could we have been massing?
could you have been massing?
could they have been massing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I mass?
couldn't you mass?
couldn't she mass?
couldn't we mass?
couldn't you mass?
couldn't they mass? 	couldn't I be massing?
couldn't you be massing?
couldn't she be massing?
couldn't we be massing?
couldn't you be massing?
couldn't they be massing? 	couldn't I have massed?
couldn't you have massed?
couldn't she have massed?
couldn't we have massed?
couldn't you have massed?
couldn't they have massed? 	couldn't I have been massing?
couldn't you have been massing?
couldn't she have been massing?
couldn't we have been massing?
couldn't you have been massing?
couldn't they have been massing?