could enlighten
Verbo regular: enlighten - enlightened- enlightened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could enlighten
you could enlighten
he could enlighten
we could enlighten
you could enlighten
they could enlighten 	I could be enlightening
you could be enlightening
he could be enlightening
we could be enlightening
you could be enlightening
they could be enlightening	I could have enlightened
you could have enlightened
he could have enlightened
we could have enlightened
you could have enlightened
they could have enlightened	I could have been enlightening
you could have been enlightening
he could have been enlightening
we could have been enlightening
you could have been enlightening
they could have been enlightening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not enlighten
you could not enlighten
he could not enlighten
we could not enlighten
you could not enlighten
they could not enlighten 	I could not be enlightening
you could not be enlightening
he could not be enlightening
we could not be enlightening
you could not be enlightening
they could not be enlightening	I could not have enlightened
you could not have enlightened
he could not have enlightened
we could not have enlightened
you could not have enlightened
they could not have enlightened	I could not have been enlightening
you could not have been enlightening
he could not have been enlightening
we could not have been enlightening
you could not have been enlightening
they could not have been enlightening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I enlighten?
could you enlighten?
could he enlighten?
could we enlighten?
could you enlighten?
could they enlighten? 	could I be enlightening?
could you be enlightening?
could he be enlightening?
could we be enlightening?
could you be enlightening?
could they be enlightening? 	could I have enlightened?
could you have enlightened?
could he have enlightened?
could we have enlightened?
could you have enlightened?
could they have enlightened? 	could I have been enlightening?
could you have been enlightening?
could he have been enlightening?
could we have been enlightening?
could you have been enlightening?
could they have been enlightening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not enlighten?
could you not enlighten?
could he not enlighten?
could we not enlighten?
could you not enlighten?
could they not enlighten? 	could I not be enlightening?
could you not be enlightening?
could he not be enlightening?
could we not be enlightening?
could you not be enlightening?
could they not be enlightening? 	could I not have enlightened?
could you not have enlightened?
could he not have enlightened?
could we not have enlightened?
could you not have enlightened?
could they not have enlightened? 	could I not have been enlightening?
could you not have been enlightening?
could he not have been enlightening?
could we not have been enlightening?
could you not have been enlightening?
could they not have been enlightening?