could lyse
Verbe régulier : lyse - lysed- lysed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could lyse
you could lyse
she could lyse
we could lyse
you could lyse
they could lyse 	I could be lysing
you could be lysing
she could be lysing
we could be lysing
you could be lysing
they could be lysing	I could have lysed
you could have lysed
she could have lysed
we could have lysed
you could have lysed
they could have lysed	I could have been lysing
you could have been lysing
she could have been lysing
we could have been lysing
you could have been lysing
they could have been lysing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not lyse
you could not lyse
she could not lyse
we could not lyse
you could not lyse
they could not lyse 	I could not be lysing
you could not be lysing
she could not be lysing
we could not be lysing
you could not be lysing
they could not be lysing	I could not have lysed
you could not have lysed
she could not have lysed
we could not have lysed
you could not have lysed
they could not have lysed	I could not have been lysing
you could not have been lysing
she could not have been lysing
we could not have been lysing
you could not have been lysing
they could not have been lysing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I lyse?
could you lyse?
could she lyse?
could we lyse?
could you lyse?
could they lyse? 	could I be lysing?
could you be lysing?
could she be lysing?
could we be lysing?
could you be lysing?
could they be lysing? 	could I have lysed?
could you have lysed?
could she have lysed?
could we have lysed?
could you have lysed?
could they have lysed? 	could I have been lysing?
could you have been lysing?
could she have been lysing?
could we have been lysing?
could you have been lysing?
could they have been lysing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not lyse?
could you not lyse?
could she not lyse?
could we not lyse?
could you not lyse?
could they not lyse? 	could I not be lysing?
could you not be lysing?
could she not be lysing?
could we not be lysing?
could you not be lysing?
could they not be lysing? 	could I not have lysed?
could you not have lysed?
could she not have lysed?
could we not have lysed?
could you not have lysed?
could they not have lysed? 	could I not have been lysing?
could you not have been lysing?
could she not have been lysing?
could we not have been lysing?
could you not have been lysing?
could they not have been lysing?