could dumb
Verbe régulier : dumb - dumbed- dumbed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could dumb
you could dumb
she could dumb
we could dumb
you could dumb
they could dumb 	I could be dumbing
you could be dumbing
she could be dumbing
we could be dumbing
you could be dumbing
they could be dumbing	I could have dumbed
you could have dumbed
she could have dumbed
we could have dumbed
you could have dumbed
they could have dumbed	I could have been dumbing
you could have been dumbing
she could have been dumbing
we could have been dumbing
you could have been dumbing
they could have been dumbing	

Négation 	
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I could not dumb
you could not dumb
she could not dumb
we could not dumb
you could not dumb
they could not dumb 	I could not be dumbing
you could not be dumbing
she could not be dumbing
we could not be dumbing
you could not be dumbing
they could not be dumbing	I could not have dumbed
you could not have dumbed
she could not have dumbed
we could not have dumbed
you could not have dumbed
they could not have dumbed	I could not have been dumbing
you could not have been dumbing
she could not have been dumbing
we could not have been dumbing
you could not have been dumbing
they could not have been dumbing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I dumb?
could you dumb?
could she dumb?
could we dumb?
could you dumb?
could they dumb? 	could I be dumbing?
could you be dumbing?
could she be dumbing?
could we be dumbing?
could you be dumbing?
could they be dumbing? 	could I have dumbed?
could you have dumbed?
could she have dumbed?
could we have dumbed?
could you have dumbed?
could they have dumbed? 	could I have been dumbing?
could you have been dumbing?
could she have been dumbing?
could we have been dumbing?
could you have been dumbing?
could they have been dumbing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not dumb?
could you not dumb?
could she not dumb?
could we not dumb?
could you not dumb?
could they not dumb? 	could I not be dumbing?
could you not be dumbing?
could she not be dumbing?
could we not be dumbing?
could you not be dumbing?
could they not be dumbing? 	could I not have dumbed?
could you not have dumbed?
could she not have dumbed?
could we not have dumbed?
could you not have dumbed?
could they not have dumbed? 	could I not have been dumbing?
could you not have been dumbing?
could she not have been dumbing?
could we not have been dumbing?
could you not have been dumbing?
could they not have been dumbing?