could hem
Verbo regular: hem - hemmed- hemmed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could hem
you could hem
he could hem
we could hem
you could hem
they could hem 	I could be hemming
you could be hemming
he could be hemming
we could be hemming
you could be hemming
they could be hemming	I could have hemmed
you could have hemmed
he could have hemmed
we could have hemmed
you could have hemmed
they could have hemmed	I could have been hemming
you could have been hemming
he could have been hemming
we could have been hemming
you could have been hemming
they could have been hemming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not hem
you could not hem
he could not hem
we could not hem
you could not hem
they could not hem 	I could not be hemming
you could not be hemming
he could not be hemming
we could not be hemming
you could not be hemming
they could not be hemming	I could not have hemmed
you could not have hemmed
he could not have hemmed
we could not have hemmed
you could not have hemmed
they could not have hemmed	I could not have been hemming
you could not have been hemming
he could not have been hemming
we could not have been hemming
you could not have been hemming
they could not have been hemming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I hem?
could you hem?
could he hem?
could we hem?
could you hem?
could they hem? 	could I be hemming?
could you be hemming?
could he be hemming?
could we be hemming?
could you be hemming?
could they be hemming? 	could I have hemmed?
could you have hemmed?
could he have hemmed?
could we have hemmed?
could you have hemmed?
could they have hemmed? 	could I have been hemming?
could you have been hemming?
could he have been hemming?
could we have been hemming?
could you have been hemming?
could they have been hemming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not hem?
could you not hem?
could he not hem?
could we not hem?
could you not hem?
could they not hem? 	could I not be hemming?
could you not be hemming?
could he not be hemming?
could we not be hemming?
could you not be hemming?
could they not be hemming? 	could I not have hemmed?
could you not have hemmed?
could he not have hemmed?
could we not have hemmed?
could you not have hemmed?
could they not have hemmed? 	could I not have been hemming?
could you not have been hemming?
could he not have been hemming?
could we not have been hemming?
could you not have been hemming?
could they not have been hemming?