could perk
Verbe régulier : perk - perked- perked
Traduction française : passer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could perk
you could perk
he could perk
we could perk
you could perk
they could perk 	I could be perking
you could be perking
he could be perking
we could be perking
you could be perking
they could be perking	I could have perked
you could have perked
he could have perked
we could have perked
you could have perked
they could have perked	I could have been perking
you could have been perking
he could have been perking
we could have been perking
you could have been perking
they could have been perking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't perk
you couldn't perk
he couldn't perk
we couldn't perk
you couldn't perk
they couldn't perk 	I couldn't be perking
you couldn't be perking
he couldn't be perking
we couldn't be perking
you couldn't be perking
they couldn't be perking	I couldn't have perked
you couldn't have perked
he couldn't have perked
we couldn't have perked
you couldn't have perked
they couldn't have perked	I couldn't have been perking
you couldn't have been perking
he couldn't have been perking
we couldn't have been perking
you couldn't have been perking
they couldn't have been perking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I perk?
could you perk?
could he perk?
could we perk?
could you perk?
could they perk? 	could I be perking?
could you be perking?
could he be perking?
could we be perking?
could you be perking?
could they be perking? 	could I have perked?
could you have perked?
could he have perked?
could we have perked?
could you have perked?
could they have perked? 	could I have been perking?
could you have been perking?
could he have been perking?
could we have been perking?
could you have been perking?
could they have been perking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I perk?
couldn't you perk?
couldn't he perk?
couldn't we perk?
couldn't you perk?
couldn't they perk? 	couldn't I be perking?
couldn't you be perking?
couldn't he be perking?
couldn't we be perking?
couldn't you be perking?
couldn't they be perking? 	couldn't I have perked?
couldn't you have perked?
couldn't he have perked?
couldn't we have perked?
couldn't you have perked?
couldn't they have perked? 	couldn't I have been perking?
couldn't you have been perking?
couldn't he have been perking?
couldn't we have been perking?
couldn't you have been perking?
couldn't they have been perking?