could tunnel
Verbe régulier : tunnel - tunnelled- tunnelled
Traduction française : creuser - creuser ou percer un tunnel ou des tunnels 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could tunnel
you could tunnel
she could tunnel
we could tunnel
you could tunnel
they could tunnel 	I could be tunnelling
you could be tunnelling
she could be tunnelling
we could be tunnelling
you could be tunnelling
they could be tunnelling	I could have tunnelled
you could have tunnelled
she could have tunnelled
we could have tunnelled
you could have tunnelled
they could have tunnelled	I could have been tunnelling
you could have been tunnelling
she could have been tunnelling
we could have been tunnelling
you could have been tunnelling
they could have been tunnelling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not tunnel
you could not tunnel
she could not tunnel
we could not tunnel
you could not tunnel
they could not tunnel 	I could not be tunnelling
you could not be tunnelling
she could not be tunnelling
we could not be tunnelling
you could not be tunnelling
they could not be tunnelling	I could not have tunnelled
you could not have tunnelled
she could not have tunnelled
we could not have tunnelled
you could not have tunnelled
they could not have tunnelled	I could not have been tunnelling
you could not have been tunnelling
she could not have been tunnelling
we could not have been tunnelling
you could not have been tunnelling
they could not have been tunnelling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I tunnel?
could you tunnel?
could she tunnel?
could we tunnel?
could you tunnel?
could they tunnel? 	could I be tunnelling?
could you be tunnelling?
could she be tunnelling?
could we be tunnelling?
could you be tunnelling?
could they be tunnelling? 	could I have tunnelled?
could you have tunnelled?
could she have tunnelled?
could we have tunnelled?
could you have tunnelled?
could they have tunnelled? 	could I have been tunnelling?
could you have been tunnelling?
could she have been tunnelling?
could we have been tunnelling?
could you have been tunnelling?
could they have been tunnelling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not tunnel?
could you not tunnel?
could she not tunnel?
could we not tunnel?
could you not tunnel?
could they not tunnel? 	could I not be tunnelling?
could you not be tunnelling?
could she not be tunnelling?
could we not be tunnelling?
could you not be tunnelling?
could they not be tunnelling? 	could I not have tunnelled?
could you not have tunnelled?
could she not have tunnelled?
could we not have tunnelled?
could you not have tunnelled?
could they not have tunnelled? 	could I not have been tunnelling?
could you not have been tunnelling?
could she not have been tunnelling?
could we not have been tunnelling?
could you not have been tunnelling?
could they not have been tunnelling?