could overstress
Verbe régulier : overstress - overstressed- overstressed

Affirmation 	
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I could overstress
you could overstress
she could overstress
we could overstress
you could overstress
they could overstress 	I could be overstressing
you could be overstressing
she could be overstressing
we could be overstressing
you could be overstressing
they could be overstressing	I could have overstressed
you could have overstressed
she could have overstressed
we could have overstressed
you could have overstressed
they could have overstressed	I could have been overstressing
you could have been overstressing
she could have been overstressing
we could have been overstressing
you could have been overstressing
they could have been overstressing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't overstress
you couldn't overstress
she couldn't overstress
we couldn't overstress
you couldn't overstress
they couldn't overstress 	I couldn't be overstressing
you couldn't be overstressing
she couldn't be overstressing
we couldn't be overstressing
you couldn't be overstressing
they couldn't be overstressing	I couldn't have overstressed
you couldn't have overstressed
she couldn't have overstressed
we couldn't have overstressed
you couldn't have overstressed
they couldn't have overstressed	I couldn't have been overstressing
you couldn't have been overstressing
she couldn't have been overstressing
we couldn't have been overstressing
you couldn't have been overstressing
they couldn't have been overstressing	

Forme interrogative 	
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could I overstress?
could you overstress?
could she overstress?
could we overstress?
could you overstress?
could they overstress? 	could I be overstressing?
could you be overstressing?
could she be overstressing?
could we be overstressing?
could you be overstressing?
could they be overstressing? 	could I have overstressed?
could you have overstressed?
could she have overstressed?
could we have overstressed?
could you have overstressed?
could they have overstressed? 	could I have been overstressing?
could you have been overstressing?
could she have been overstressing?
could we have been overstressing?
could you have been overstressing?
could they have been overstressing? 	

Forme interro-négative 	
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couldn't I overstress?
couldn't you overstress?
couldn't she overstress?
couldn't we overstress?
couldn't you overstress?
couldn't they overstress? 	couldn't I be overstressing?
couldn't you be overstressing?
couldn't she be overstressing?
couldn't we be overstressing?
couldn't you be overstressing?
couldn't they be overstressing? 	couldn't I have overstressed?
couldn't you have overstressed?
couldn't she have overstressed?
couldn't we have overstressed?
couldn't you have overstressed?
couldn't they have overstressed? 	couldn't I have been overstressing?
couldn't you have been overstressing?
couldn't she have been overstressing?
couldn't we have been overstressing?
couldn't you have been overstressing?
couldn't they have been overstressing?