could leister
Verbe régulier : leister - leistered- leistered

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could leister
you could leister
she could leister
we could leister
you could leister
they could leister 	I could be leistering
you could be leistering
she could be leistering
we could be leistering
you could be leistering
they could be leistering	I could have leistered
you could have leistered
she could have leistered
we could have leistered
you could have leistered
they could have leistered	I could have been leistering
you could have been leistering
she could have been leistering
we could have been leistering
you could have been leistering
they could have been leistering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't leister
you couldn't leister
she couldn't leister
we couldn't leister
you couldn't leister
they couldn't leister 	I couldn't be leistering
you couldn't be leistering
she couldn't be leistering
we couldn't be leistering
you couldn't be leistering
they couldn't be leistering	I couldn't have leistered
you couldn't have leistered
she couldn't have leistered
we couldn't have leistered
you couldn't have leistered
they couldn't have leistered	I couldn't have been leistering
you couldn't have been leistering
she couldn't have been leistering
we couldn't have been leistering
you couldn't have been leistering
they couldn't have been leistering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I leister?
could you leister?
could she leister?
could we leister?
could you leister?
could they leister? 	could I be leistering?
could you be leistering?
could she be leistering?
could we be leistering?
could you be leistering?
could they be leistering? 	could I have leistered?
could you have leistered?
could she have leistered?
could we have leistered?
could you have leistered?
could they have leistered? 	could I have been leistering?
could you have been leistering?
could she have been leistering?
could we have been leistering?
could you have been leistering?
could they have been leistering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I leister?
couldn't you leister?
couldn't she leister?
couldn't we leister?
couldn't you leister?
couldn't they leister? 	couldn't I be leistering?
couldn't you be leistering?
couldn't she be leistering?
couldn't we be leistering?
couldn't you be leistering?
couldn't they be leistering? 	couldn't I have leistered?
couldn't you have leistered?
couldn't she have leistered?
couldn't we have leistered?
couldn't you have leistered?
couldn't they have leistered? 	couldn't I have been leistering?
couldn't you have been leistering?
couldn't she have been leistering?
couldn't we have been leistering?
couldn't you have been leistering?
couldn't they have been leistering?