can checker
Verbe régulier : checker - checkered- checkered

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can checker
you can checker
she can checker
we can checker
you can checker
they can checker 	I can be checkering
you can be checkering
she can be checkering
we can be checkering
you can be checkering
they can be checkering	I can have checkered
you can have checkered
she can have checkered
we can have checkered
you can have checkered
they can have checkered	I can have been checkering
you can have been checkering
she can have been checkering
we can have been checkering
you can have been checkering
they can have been checkering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can't checker
you can't checker
she can't checker
we can't checker
you can't checker
they can't checker 	I can't be checkering
you can't be checkering
she can't be checkering
we can't be checkering
you can't be checkering
they can't be checkering	I can't have checkered
you can't have checkered
she can't have checkered
we can't have checkered
you can't have checkered
they can't have checkered	I can't have been checkering
you can't have been checkering
she can't have been checkering
we can't have been checkering
you can't have been checkering
they can't have been checkering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I checker?
can you checker?
can she checker?
can we checker?
can you checker?
can they checker? 	can I be checkering?
can you be checkering?
can she be checkering?
can we be checkering?
can you be checkering?
can they be checkering? 	can I have checkered?
can you have checkered?
can she have checkered?
can we have checkered?
can you have checkered?
can they have checkered? 	can I have been checkering?
can you have been checkering?
can she have been checkering?
can we have been checkering?
can you have been checkering?
can they have been checkering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can't I checker?
can't you checker?
can't she checker?
can't we checker?
can't you checker?
can't they checker? 	can't I be checkering?
can't you be checkering?
can't she be checkering?
can't we be checkering?
can't you be checkering?
can't they be checkering? 	can't I have checkered?
can't you have checkered?
can't she have checkered?
can't we have checkered?
can't you have checkered?
can't they have checkered? 	can't I have been checkering?
can't you have been checkering?
can't she have been checkering?
can't we have been checkering?
can't you have been checkering?
can't they have been checkering?