could erase
Verbo regular: erase - erased- erased

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could erase
you could erase
he could erase
we could erase
you could erase
they could erase 	I could be erasing
you could be erasing
he could be erasing
we could be erasing
you could be erasing
they could be erasing	I could have erased
you could have erased
he could have erased
we could have erased
you could have erased
they could have erased	I could have been erasing
you could have been erasing
he could have been erasing
we could have been erasing
you could have been erasing
they could have been erasing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not erase
you could not erase
he could not erase
we could not erase
you could not erase
they could not erase 	I could not be erasing
you could not be erasing
he could not be erasing
we could not be erasing
you could not be erasing
they could not be erasing	I could not have erased
you could not have erased
he could not have erased
we could not have erased
you could not have erased
they could not have erased	I could not have been erasing
you could not have been erasing
he could not have been erasing
we could not have been erasing
you could not have been erasing
they could not have been erasing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I erase?
could you erase?
could he erase?
could we erase?
could you erase?
could they erase? 	could I be erasing?
could you be erasing?
could he be erasing?
could we be erasing?
could you be erasing?
could they be erasing? 	could I have erased?
could you have erased?
could he have erased?
could we have erased?
could you have erased?
could they have erased? 	could I have been erasing?
could you have been erasing?
could he have been erasing?
could we have been erasing?
could you have been erasing?
could they have been erasing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not erase?
could you not erase?
could he not erase?
could we not erase?
could you not erase?
could they not erase? 	could I not be erasing?
could you not be erasing?
could he not be erasing?
could we not be erasing?
could you not be erasing?
could they not be erasing? 	could I not have erased?
could you not have erased?
could he not have erased?
could we not have erased?
could you not have erased?
could they not have erased? 	could I not have been erasing?
could you not have been erasing?
could he not have been erasing?
could we not have been erasing?
could you not have been erasing?
could they not have been erasing?