could drub
Verbe régulier : drub - drubbed- drubbed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could drub
you could drub
she could drub
we could drub
you could drub
they could drub 	I could be drubbing
you could be drubbing
she could be drubbing
we could be drubbing
you could be drubbing
they could be drubbing	I could have drubbed
you could have drubbed
she could have drubbed
we could have drubbed
you could have drubbed
they could have drubbed	I could have been drubbing
you could have been drubbing
she could have been drubbing
we could have been drubbing
you could have been drubbing
they could have been drubbing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't drub
you couldn't drub
she couldn't drub
we couldn't drub
you couldn't drub
they couldn't drub 	I couldn't be drubbing
you couldn't be drubbing
she couldn't be drubbing
we couldn't be drubbing
you couldn't be drubbing
they couldn't be drubbing	I couldn't have drubbed
you couldn't have drubbed
she couldn't have drubbed
we couldn't have drubbed
you couldn't have drubbed
they couldn't have drubbed	I couldn't have been drubbing
you couldn't have been drubbing
she couldn't have been drubbing
we couldn't have been drubbing
you couldn't have been drubbing
they couldn't have been drubbing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I drub?
could you drub?
could she drub?
could we drub?
could you drub?
could they drub? 	could I be drubbing?
could you be drubbing?
could she be drubbing?
could we be drubbing?
could you be drubbing?
could they be drubbing? 	could I have drubbed?
could you have drubbed?
could she have drubbed?
could we have drubbed?
could you have drubbed?
could they have drubbed? 	could I have been drubbing?
could you have been drubbing?
could she have been drubbing?
could we have been drubbing?
could you have been drubbing?
could they have been drubbing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I drub?
couldn't you drub?
couldn't she drub?
couldn't we drub?
couldn't you drub?
couldn't they drub? 	couldn't I be drubbing?
couldn't you be drubbing?
couldn't she be drubbing?
couldn't we be drubbing?
couldn't you be drubbing?
couldn't they be drubbing? 	couldn't I have drubbed?
couldn't you have drubbed?
couldn't she have drubbed?
couldn't we have drubbed?
couldn't you have drubbed?
couldn't they have drubbed? 	couldn't I have been drubbing?
couldn't you have been drubbing?
couldn't she have been drubbing?
couldn't we have been drubbing?
couldn't you have been drubbing?
couldn't they have been drubbing?