can retain
Verbe régulier : retain - retained- retained

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can retain
you can retain
she can retain
we can retain
you can retain
they can retain 	I can be retaining
you can be retaining
she can be retaining
we can be retaining
you can be retaining
they can be retaining	I can have retained
you can have retained
she can have retained
we can have retained
you can have retained
they can have retained	I can have been retaining
you can have been retaining
she can have been retaining
we can have been retaining
you can have been retaining
they can have been retaining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot retain
you cannot retain
she cannot retain
we cannot retain
you cannot retain
they cannot retain 	I cannot be retaining
you cannot be retaining
she cannot be retaining
we cannot be retaining
you cannot be retaining
they cannot be retaining	I cannot have retained
you cannot have retained
she cannot have retained
we cannot have retained
you cannot have retained
they cannot have retained	I cannot have been retaining
you cannot have been retaining
she cannot have been retaining
we cannot have been retaining
you cannot have been retaining
they cannot have been retaining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I retain?
can you retain?
can she retain?
can we retain?
can you retain?
can they retain? 	can I be retaining?
can you be retaining?
can she be retaining?
can we be retaining?
can you be retaining?
can they be retaining? 	can I have retained?
can you have retained?
can she have retained?
can we have retained?
can you have retained?
can they have retained? 	can I have been retaining?
can you have been retaining?
can she have been retaining?
can we have been retaining?
can you have been retaining?
can they have been retaining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not retain?
can you not retain?
can she not retain?
can we not retain?
can you not retain?
can they not retain? 	can I not be retaining?
can you not be retaining?
can she not be retaining?
can we not be retaining?
can you not be retaining?
can they not be retaining? 	can I not have retained?
can you not have retained?
can she not have retained?
can we not have retained?
can you not have retained?
can they not have retained? 	can I not have been retaining?
can you not have been retaining?
can she not have been retaining?
can we not have been retaining?
can you not have been retaining?
can they not have been retaining?