could quail
Verbe régulier : quail - quailed- quailed
Traduction française : trembler - perdre courage 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could quail
you could quail
he could quail
we could quail
you could quail
they could quail 	I could be quailing
you could be quailing
he could be quailing
we could be quailing
you could be quailing
they could be quailing	I could have quailed
you could have quailed
he could have quailed
we could have quailed
you could have quailed
they could have quailed	I could have been quailing
you could have been quailing
he could have been quailing
we could have been quailing
you could have been quailing
they could have been quailing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't quail
you couldn't quail
he couldn't quail
we couldn't quail
you couldn't quail
they couldn't quail 	I couldn't be quailing
you couldn't be quailing
he couldn't be quailing
we couldn't be quailing
you couldn't be quailing
they couldn't be quailing	I couldn't have quailed
you couldn't have quailed
he couldn't have quailed
we couldn't have quailed
you couldn't have quailed
they couldn't have quailed	I couldn't have been quailing
you couldn't have been quailing
he couldn't have been quailing
we couldn't have been quailing
you couldn't have been quailing
they couldn't have been quailing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I quail?
could you quail?
could he quail?
could we quail?
could you quail?
could they quail? 	could I be quailing?
could you be quailing?
could he be quailing?
could we be quailing?
could you be quailing?
could they be quailing? 	could I have quailed?
could you have quailed?
could he have quailed?
could we have quailed?
could you have quailed?
could they have quailed? 	could I have been quailing?
could you have been quailing?
could he have been quailing?
could we have been quailing?
could you have been quailing?
could they have been quailing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I quail?
couldn't you quail?
couldn't he quail?
couldn't we quail?
couldn't you quail?
couldn't they quail? 	couldn't I be quailing?
couldn't you be quailing?
couldn't he be quailing?
couldn't we be quailing?
couldn't you be quailing?
couldn't they be quailing? 	couldn't I have quailed?
couldn't you have quailed?
couldn't he have quailed?
couldn't we have quailed?
couldn't you have quailed?
couldn't they have quailed? 	couldn't I have been quailing?
couldn't you have been quailing?
couldn't he have been quailing?
couldn't we have been quailing?
couldn't you have been quailing?
couldn't they have been quailing?