could sty
Verbe régulier : sty - stied- stied

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could sty
you could sty
she could sty
we could sty
you could sty
they could sty 	I could be stying
you could be stying
she could be stying
we could be stying
you could be stying
they could be stying	I could have stied
you could have stied
she could have stied
we could have stied
you could have stied
they could have stied	I could have been stying
you could have been stying
she could have been stying
we could have been stying
you could have been stying
they could have been stying	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't sty
you couldn't sty
she couldn't sty
we couldn't sty
you couldn't sty
they couldn't sty 	I couldn't be stying
you couldn't be stying
she couldn't be stying
we couldn't be stying
you couldn't be stying
they couldn't be stying	I couldn't have stied
you couldn't have stied
she couldn't have stied
we couldn't have stied
you couldn't have stied
they couldn't have stied	I couldn't have been stying
you couldn't have been stying
she couldn't have been stying
we couldn't have been stying
you couldn't have been stying
they couldn't have been stying	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I sty?
could you sty?
could she sty?
could we sty?
could you sty?
could they sty? 	could I be stying?
could you be stying?
could she be stying?
could we be stying?
could you be stying?
could they be stying? 	could I have stied?
could you have stied?
could she have stied?
could we have stied?
could you have stied?
could they have stied? 	could I have been stying?
could you have been stying?
could she have been stying?
could we have been stying?
could you have been stying?
could they have been stying? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I sty?
couldn't you sty?
couldn't she sty?
couldn't we sty?
couldn't you sty?
couldn't they sty? 	couldn't I be stying?
couldn't you be stying?
couldn't she be stying?
couldn't we be stying?
couldn't you be stying?
couldn't they be stying? 	couldn't I have stied?
couldn't you have stied?
couldn't she have stied?
couldn't we have stied?
couldn't you have stied?
couldn't they have stied? 	couldn't I have been stying?
couldn't you have been stying?
couldn't she have been stying?
couldn't we have been stying?
couldn't you have been stying?
couldn't they have been stying?