could referee
Verbe régulier : referee - refereed- refereed
Traduction française : arbitrer - être arbitre 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could referee
you could referee
she could referee
we could referee
you could referee
they could referee 	I could be refereeing
you could be refereeing
she could be refereeing
we could be refereeing
you could be refereeing
they could be refereeing	I could have refereed
you could have refereed
she could have refereed
we could have refereed
you could have refereed
they could have refereed	I could have been refereeing
you could have been refereeing
she could have been refereeing
we could have been refereeing
you could have been refereeing
they could have been refereeing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't referee
you couldn't referee
she couldn't referee
we couldn't referee
you couldn't referee
they couldn't referee 	I couldn't be refereeing
you couldn't be refereeing
she couldn't be refereeing
we couldn't be refereeing
you couldn't be refereeing
they couldn't be refereeing	I couldn't have refereed
you couldn't have refereed
she couldn't have refereed
we couldn't have refereed
you couldn't have refereed
they couldn't have refereed	I couldn't have been refereeing
you couldn't have been refereeing
she couldn't have been refereeing
we couldn't have been refereeing
you couldn't have been refereeing
they couldn't have been refereeing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I referee?
could you referee?
could she referee?
could we referee?
could you referee?
could they referee? 	could I be refereeing?
could you be refereeing?
could she be refereeing?
could we be refereeing?
could you be refereeing?
could they be refereeing? 	could I have refereed?
could you have refereed?
could she have refereed?
could we have refereed?
could you have refereed?
could they have refereed? 	could I have been refereeing?
could you have been refereeing?
could she have been refereeing?
could we have been refereeing?
could you have been refereeing?
could they have been refereeing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I referee?
couldn't you referee?
couldn't she referee?
couldn't we referee?
couldn't you referee?
couldn't they referee? 	couldn't I be refereeing?
couldn't you be refereeing?
couldn't she be refereeing?
couldn't we be refereeing?
couldn't you be refereeing?
couldn't they be refereeing? 	couldn't I have refereed?
couldn't you have refereed?
couldn't she have refereed?
couldn't we have refereed?
couldn't you have refereed?
couldn't they have refereed? 	couldn't I have been refereeing?
couldn't you have been refereeing?
couldn't she have been refereeing?
couldn't we have been refereeing?
couldn't you have been refereeing?
couldn't they have been refereeing?