could stymy
Verbe régulier : stymy - stymied- stymied

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could stymy
you could stymy
she could stymy
we could stymy
you could stymy
they could stymy 	I could be stymying
you could be stymying
she could be stymying
we could be stymying
you could be stymying
they could be stymying	I could have stymied
you could have stymied
she could have stymied
we could have stymied
you could have stymied
they could have stymied	I could have been stymying
you could have been stymying
she could have been stymying
we could have been stymying
you could have been stymying
they could have been stymying	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't stymy
you couldn't stymy
she couldn't stymy
we couldn't stymy
you couldn't stymy
they couldn't stymy 	I couldn't be stymying
you couldn't be stymying
she couldn't be stymying
we couldn't be stymying
you couldn't be stymying
they couldn't be stymying	I couldn't have stymied
you couldn't have stymied
she couldn't have stymied
we couldn't have stymied
you couldn't have stymied
they couldn't have stymied	I couldn't have been stymying
you couldn't have been stymying
she couldn't have been stymying
we couldn't have been stymying
you couldn't have been stymying
they couldn't have been stymying	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I stymy?
could you stymy?
could she stymy?
could we stymy?
could you stymy?
could they stymy? 	could I be stymying?
could you be stymying?
could she be stymying?
could we be stymying?
could you be stymying?
could they be stymying? 	could I have stymied?
could you have stymied?
could she have stymied?
could we have stymied?
could you have stymied?
could they have stymied? 	could I have been stymying?
could you have been stymying?
could she have been stymying?
could we have been stymying?
could you have been stymying?
could they have been stymying? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I stymy?
couldn't you stymy?
couldn't she stymy?
couldn't we stymy?
couldn't you stymy?
couldn't they stymy? 	couldn't I be stymying?
couldn't you be stymying?
couldn't she be stymying?
couldn't we be stymying?
couldn't you be stymying?
couldn't they be stymying? 	couldn't I have stymied?
couldn't you have stymied?
couldn't she have stymied?
couldn't we have stymied?
couldn't you have stymied?
couldn't they have stymied? 	couldn't I have been stymying?
couldn't you have been stymying?
couldn't she have been stymying?
couldn't we have been stymying?
couldn't you have been stymying?
couldn't they have been stymying?