could destain
Verbe régulier : destain - destained- destained

Affirmation 	
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I could destain
you could destain
she could destain
we could destain
you could destain
they could destain 	I could be destaining
you could be destaining
she could be destaining
we could be destaining
you could be destaining
they could be destaining	I could have destained
you could have destained
she could have destained
we could have destained
you could have destained
they could have destained	I could have been destaining
you could have been destaining
she could have been destaining
we could have been destaining
you could have been destaining
they could have been destaining	

Négation 	
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I could not destain
you could not destain
she could not destain
we could not destain
you could not destain
they could not destain 	I could not be destaining
you could not be destaining
she could not be destaining
we could not be destaining
you could not be destaining
they could not be destaining	I could not have destained
you could not have destained
she could not have destained
we could not have destained
you could not have destained
they could not have destained	I could not have been destaining
you could not have been destaining
she could not have been destaining
we could not have been destaining
you could not have been destaining
they could not have been destaining	

Forme interrogative 	
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could I destain?
could you destain?
could she destain?
could we destain?
could you destain?
could they destain? 	could I be destaining?
could you be destaining?
could she be destaining?
could we be destaining?
could you be destaining?
could they be destaining? 	could I have destained?
could you have destained?
could she have destained?
could we have destained?
could you have destained?
could they have destained? 	could I have been destaining?
could you have been destaining?
could she have been destaining?
could we have been destaining?
could you have been destaining?
could they have been destaining? 	

Forme interro-négative 	
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could I not destain?
could you not destain?
could she not destain?
could we not destain?
could you not destain?
could they not destain? 	could I not be destaining?
could you not be destaining?
could she not be destaining?
could we not be destaining?
could you not be destaining?
could they not be destaining? 	could I not have destained?
could you not have destained?
could she not have destained?
could we not have destained?
could you not have destained?
could they not have destained? 	could I not have been destaining?
could you not have been destaining?
could she not have been destaining?
could we not have been destaining?
could you not have been destaining?
could they not have been destaining?