could overdub
Verbe régulier : overdub - overdubed- overdubed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could overdub
you could overdub
he could overdub
we could overdub
you could overdub
they could overdub 	I could be overdubing
you could be overdubing
he could be overdubing
we could be overdubing
you could be overdubing
they could be overdubing	I could have overdubed
you could have overdubed
he could have overdubed
we could have overdubed
you could have overdubed
they could have overdubed	I could have been overdubing
you could have been overdubing
he could have been overdubing
we could have been overdubing
you could have been overdubing
they could have been overdubing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't overdub
you couldn't overdub
he couldn't overdub
we couldn't overdub
you couldn't overdub
they couldn't overdub 	I couldn't be overdubing
you couldn't be overdubing
he couldn't be overdubing
we couldn't be overdubing
you couldn't be overdubing
they couldn't be overdubing	I couldn't have overdubed
you couldn't have overdubed
he couldn't have overdubed
we couldn't have overdubed
you couldn't have overdubed
they couldn't have overdubed	I couldn't have been overdubing
you couldn't have been overdubing
he couldn't have been overdubing
we couldn't have been overdubing
you couldn't have been overdubing
they couldn't have been overdubing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I overdub?
could you overdub?
could he overdub?
could we overdub?
could you overdub?
could they overdub? 	could I be overdubing?
could you be overdubing?
could he be overdubing?
could we be overdubing?
could you be overdubing?
could they be overdubing? 	could I have overdubed?
could you have overdubed?
could he have overdubed?
could we have overdubed?
could you have overdubed?
could they have overdubed? 	could I have been overdubing?
could you have been overdubing?
could he have been overdubing?
could we have been overdubing?
could you have been overdubing?
could they have been overdubing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I overdub?
couldn't you overdub?
couldn't he overdub?
couldn't we overdub?
couldn't you overdub?
couldn't they overdub? 	couldn't I be overdubing?
couldn't you be overdubing?
couldn't he be overdubing?
couldn't we be overdubing?
couldn't you be overdubing?
couldn't they be overdubing? 	couldn't I have overdubed?
couldn't you have overdubed?
couldn't he have overdubed?
couldn't we have overdubed?
couldn't you have overdubed?
couldn't they have overdubed? 	couldn't I have been overdubing?
couldn't you have been overdubing?
couldn't he have been overdubing?
couldn't we have been overdubing?
couldn't you have been overdubing?
couldn't they have been overdubing?