could perforate
Verbe régulier : perforate - perforated- perforated
Traduction française : perforer - percer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could perforate
you could perforate
she could perforate
we could perforate
you could perforate
they could perforate 	I could be perforating
you could be perforating
she could be perforating
we could be perforating
you could be perforating
they could be perforating	I could have perforated
you could have perforated
she could have perforated
we could have perforated
you could have perforated
they could have perforated	I could have been perforating
you could have been perforating
she could have been perforating
we could have been perforating
you could have been perforating
they could have been perforating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't perforate
you couldn't perforate
she couldn't perforate
we couldn't perforate
you couldn't perforate
they couldn't perforate 	I couldn't be perforating
you couldn't be perforating
she couldn't be perforating
we couldn't be perforating
you couldn't be perforating
they couldn't be perforating	I couldn't have perforated
you couldn't have perforated
she couldn't have perforated
we couldn't have perforated
you couldn't have perforated
they couldn't have perforated	I couldn't have been perforating
you couldn't have been perforating
she couldn't have been perforating
we couldn't have been perforating
you couldn't have been perforating
they couldn't have been perforating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I perforate?
could you perforate?
could she perforate?
could we perforate?
could you perforate?
could they perforate? 	could I be perforating?
could you be perforating?
could she be perforating?
could we be perforating?
could you be perforating?
could they be perforating? 	could I have perforated?
could you have perforated?
could she have perforated?
could we have perforated?
could you have perforated?
could they have perforated? 	could I have been perforating?
could you have been perforating?
could she have been perforating?
could we have been perforating?
could you have been perforating?
could they have been perforating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I perforate?
couldn't you perforate?
couldn't she perforate?
couldn't we perforate?
couldn't you perforate?
couldn't they perforate? 	couldn't I be perforating?
couldn't you be perforating?
couldn't she be perforating?
couldn't we be perforating?
couldn't you be perforating?
couldn't they be perforating? 	couldn't I have perforated?
couldn't you have perforated?
couldn't she have perforated?
couldn't we have perforated?
couldn't you have perforated?
couldn't they have perforated? 	couldn't I have been perforating?
couldn't you have been perforating?
couldn't she have been perforating?
couldn't we have been perforating?
couldn't you have been perforating?
couldn't they have been perforating?