could trepan
Verbe régulier : trepan - trepanned- trepanned
Traduction française : forer - trépaner 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could trepan
you could trepan
he could trepan
we could trepan
you could trepan
they could trepan 	I could be trepanning
you could be trepanning
he could be trepanning
we could be trepanning
you could be trepanning
they could be trepanning	I could have trepanned
you could have trepanned
he could have trepanned
we could have trepanned
you could have trepanned
they could have trepanned	I could have been trepanning
you could have been trepanning
he could have been trepanning
we could have been trepanning
you could have been trepanning
they could have been trepanning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't trepan
you couldn't trepan
he couldn't trepan
we couldn't trepan
you couldn't trepan
they couldn't trepan 	I couldn't be trepanning
you couldn't be trepanning
he couldn't be trepanning
we couldn't be trepanning
you couldn't be trepanning
they couldn't be trepanning	I couldn't have trepanned
you couldn't have trepanned
he couldn't have trepanned
we couldn't have trepanned
you couldn't have trepanned
they couldn't have trepanned	I couldn't have been trepanning
you couldn't have been trepanning
he couldn't have been trepanning
we couldn't have been trepanning
you couldn't have been trepanning
they couldn't have been trepanning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I trepan?
could you trepan?
could he trepan?
could we trepan?
could you trepan?
could they trepan? 	could I be trepanning?
could you be trepanning?
could he be trepanning?
could we be trepanning?
could you be trepanning?
could they be trepanning? 	could I have trepanned?
could you have trepanned?
could he have trepanned?
could we have trepanned?
could you have trepanned?
could they have trepanned? 	could I have been trepanning?
could you have been trepanning?
could he have been trepanning?
could we have been trepanning?
could you have been trepanning?
could they have been trepanning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I trepan?
couldn't you trepan?
couldn't he trepan?
couldn't we trepan?
couldn't you trepan?
couldn't they trepan? 	couldn't I be trepanning?
couldn't you be trepanning?
couldn't he be trepanning?
couldn't we be trepanning?
couldn't you be trepanning?
couldn't they be trepanning? 	couldn't I have trepanned?
couldn't you have trepanned?
couldn't he have trepanned?
couldn't we have trepanned?
couldn't you have trepanned?
couldn't they have trepanned? 	couldn't I have been trepanning?
couldn't you have been trepanning?
couldn't he have been trepanning?
couldn't we have been trepanning?
couldn't you have been trepanning?
couldn't they have been trepanning?