could perfuse
Verbe régulier : perfuse - perfused- perfused

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could perfuse
you could perfuse
she could perfuse
we could perfuse
you could perfuse
they could perfuse 	I could be perfusing
you could be perfusing
she could be perfusing
we could be perfusing
you could be perfusing
they could be perfusing	I could have perfused
you could have perfused
she could have perfused
we could have perfused
you could have perfused
they could have perfused	I could have been perfusing
you could have been perfusing
she could have been perfusing
we could have been perfusing
you could have been perfusing
they could have been perfusing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't perfuse
you couldn't perfuse
she couldn't perfuse
we couldn't perfuse
you couldn't perfuse
they couldn't perfuse 	I couldn't be perfusing
you couldn't be perfusing
she couldn't be perfusing
we couldn't be perfusing
you couldn't be perfusing
they couldn't be perfusing	I couldn't have perfused
you couldn't have perfused
she couldn't have perfused
we couldn't have perfused
you couldn't have perfused
they couldn't have perfused	I couldn't have been perfusing
you couldn't have been perfusing
she couldn't have been perfusing
we couldn't have been perfusing
you couldn't have been perfusing
they couldn't have been perfusing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I perfuse?
could you perfuse?
could she perfuse?
could we perfuse?
could you perfuse?
could they perfuse? 	could I be perfusing?
could you be perfusing?
could she be perfusing?
could we be perfusing?
could you be perfusing?
could they be perfusing? 	could I have perfused?
could you have perfused?
could she have perfused?
could we have perfused?
could you have perfused?
could they have perfused? 	could I have been perfusing?
could you have been perfusing?
could she have been perfusing?
could we have been perfusing?
could you have been perfusing?
could they have been perfusing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I perfuse?
couldn't you perfuse?
couldn't she perfuse?
couldn't we perfuse?
couldn't you perfuse?
couldn't they perfuse? 	couldn't I be perfusing?
couldn't you be perfusing?
couldn't she be perfusing?
couldn't we be perfusing?
couldn't you be perfusing?
couldn't they be perfusing? 	couldn't I have perfused?
couldn't you have perfused?
couldn't she have perfused?
couldn't we have perfused?
couldn't you have perfused?
couldn't they have perfused? 	couldn't I have been perfusing?
couldn't you have been perfusing?
couldn't she have been perfusing?
couldn't we have been perfusing?
couldn't you have been perfusing?
couldn't they have been perfusing?