could kern
Verbe régulier : kern - kerned- kerned

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could kern
you could kern
he could kern
we could kern
you could kern
they could kern 	I could be kerning
you could be kerning
he could be kerning
we could be kerning
you could be kerning
they could be kerning	I could have kerned
you could have kerned
he could have kerned
we could have kerned
you could have kerned
they could have kerned	I could have been kerning
you could have been kerning
he could have been kerning
we could have been kerning
you could have been kerning
they could have been kerning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't kern
you couldn't kern
he couldn't kern
we couldn't kern
you couldn't kern
they couldn't kern 	I couldn't be kerning
you couldn't be kerning
he couldn't be kerning
we couldn't be kerning
you couldn't be kerning
they couldn't be kerning	I couldn't have kerned
you couldn't have kerned
he couldn't have kerned
we couldn't have kerned
you couldn't have kerned
they couldn't have kerned	I couldn't have been kerning
you couldn't have been kerning
he couldn't have been kerning
we couldn't have been kerning
you couldn't have been kerning
they couldn't have been kerning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I kern?
could you kern?
could he kern?
could we kern?
could you kern?
could they kern? 	could I be kerning?
could you be kerning?
could he be kerning?
could we be kerning?
could you be kerning?
could they be kerning? 	could I have kerned?
could you have kerned?
could he have kerned?
could we have kerned?
could you have kerned?
could they have kerned? 	could I have been kerning?
could you have been kerning?
could he have been kerning?
could we have been kerning?
could you have been kerning?
could they have been kerning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I kern?
couldn't you kern?
couldn't he kern?
couldn't we kern?
couldn't you kern?
couldn't they kern? 	couldn't I be kerning?
couldn't you be kerning?
couldn't he be kerning?
couldn't we be kerning?
couldn't you be kerning?
couldn't they be kerning? 	couldn't I have kerned?
couldn't you have kerned?
couldn't he have kerned?
couldn't we have kerned?
couldn't you have kerned?
couldn't they have kerned? 	couldn't I have been kerning?
couldn't you have been kerning?
couldn't he have been kerning?
couldn't we have been kerning?
couldn't you have been kerning?
couldn't they have been kerning?