can refer
Verbe régulier : refer - referred- referred
Traduction française : soumettre - refuser 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can refer
you can refer
she can refer
we can refer
you can refer
they can refer 	I can be referring
you can be referring
she can be referring
we can be referring
you can be referring
they can be referring	I can have referred
you can have referred
she can have referred
we can have referred
you can have referred
they can have referred	I can have been referring
you can have been referring
she can have been referring
we can have been referring
you can have been referring
they can have been referring	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot refer
you cannot refer
she cannot refer
we cannot refer
you cannot refer
they cannot refer 	I cannot be referring
you cannot be referring
she cannot be referring
we cannot be referring
you cannot be referring
they cannot be referring	I cannot have referred
you cannot have referred
she cannot have referred
we cannot have referred
you cannot have referred
they cannot have referred	I cannot have been referring
you cannot have been referring
she cannot have been referring
we cannot have been referring
you cannot have been referring
they cannot have been referring	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I refer?
can you refer?
can she refer?
can we refer?
can you refer?
can they refer? 	can I be referring?
can you be referring?
can she be referring?
can we be referring?
can you be referring?
can they be referring? 	can I have referred?
can you have referred?
can she have referred?
can we have referred?
can you have referred?
can they have referred? 	can I have been referring?
can you have been referring?
can she have been referring?
can we have been referring?
can you have been referring?
can they have been referring? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
can I not refer?
can you not refer?
can she not refer?
can we not refer?
can you not refer?
can they not refer? 	can I not be referring?
can you not be referring?
can she not be referring?
can we not be referring?
can you not be referring?
can they not be referring? 	can I not have referred?
can you not have referred?
can she not have referred?
can we not have referred?
can you not have referred?
can they not have referred? 	can I not have been referring?
can you not have been referring?
can she not have been referring?
can we not have been referring?
can you not have been referring?
can they not have been referring?