could leaf
Verbe régulier : leaf - leafed- leafed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could leaf
you could leaf
he could leaf
we could leaf
you could leaf
they could leaf 	I could be leafing
you could be leafing
he could be leafing
we could be leafing
you could be leafing
they could be leafing	I could have leafed
you could have leafed
he could have leafed
we could have leafed
you could have leafed
they could have leafed	I could have been leafing
you could have been leafing
he could have been leafing
we could have been leafing
you could have been leafing
they could have been leafing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't leaf
you couldn't leaf
he couldn't leaf
we couldn't leaf
you couldn't leaf
they couldn't leaf 	I couldn't be leafing
you couldn't be leafing
he couldn't be leafing
we couldn't be leafing
you couldn't be leafing
they couldn't be leafing	I couldn't have leafed
you couldn't have leafed
he couldn't have leafed
we couldn't have leafed
you couldn't have leafed
they couldn't have leafed	I couldn't have been leafing
you couldn't have been leafing
he couldn't have been leafing
we couldn't have been leafing
you couldn't have been leafing
they couldn't have been leafing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I leaf?
could you leaf?
could he leaf?
could we leaf?
could you leaf?
could they leaf? 	could I be leafing?
could you be leafing?
could he be leafing?
could we be leafing?
could you be leafing?
could they be leafing? 	could I have leafed?
could you have leafed?
could he have leafed?
could we have leafed?
could you have leafed?
could they have leafed? 	could I have been leafing?
could you have been leafing?
could he have been leafing?
could we have been leafing?
could you have been leafing?
could they have been leafing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I leaf?
couldn't you leaf?
couldn't he leaf?
couldn't we leaf?
couldn't you leaf?
couldn't they leaf? 	couldn't I be leafing?
couldn't you be leafing?
couldn't he be leafing?
couldn't we be leafing?
couldn't you be leafing?
couldn't they be leafing? 	couldn't I have leafed?
couldn't you have leafed?
couldn't he have leafed?
couldn't we have leafed?
couldn't you have leafed?
couldn't they have leafed? 	couldn't I have been leafing?
couldn't you have been leafing?
couldn't he have been leafing?
couldn't we have been leafing?
couldn't you have been leafing?
couldn't they have been leafing?