could nurse
Verbo regular: nurse - nursed- nursed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could nurse
you could nurse
he could nurse
we could nurse
you could nurse
they could nurse 	I could be nursing
you could be nursing
he could be nursing
we could be nursing
you could be nursing
they could be nursing	I could have nursed
you could have nursed
he could have nursed
we could have nursed
you could have nursed
they could have nursed	I could have been nursing
you could have been nursing
he could have been nursing
we could have been nursing
you could have been nursing
they could have been nursing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not nurse
you could not nurse
he could not nurse
we could not nurse
you could not nurse
they could not nurse 	I could not be nursing
you could not be nursing
he could not be nursing
we could not be nursing
you could not be nursing
they could not be nursing	I could not have nursed
you could not have nursed
he could not have nursed
we could not have nursed
you could not have nursed
they could not have nursed	I could not have been nursing
you could not have been nursing
he could not have been nursing
we could not have been nursing
you could not have been nursing
they could not have been nursing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I nurse?
could you nurse?
could he nurse?
could we nurse?
could you nurse?
could they nurse? 	could I be nursing?
could you be nursing?
could he be nursing?
could we be nursing?
could you be nursing?
could they be nursing? 	could I have nursed?
could you have nursed?
could he have nursed?
could we have nursed?
could you have nursed?
could they have nursed? 	could I have been nursing?
could you have been nursing?
could he have been nursing?
could we have been nursing?
could you have been nursing?
could they have been nursing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not nurse?
could you not nurse?
could he not nurse?
could we not nurse?
could you not nurse?
could they not nurse? 	could I not be nursing?
could you not be nursing?
could he not be nursing?
could we not be nursing?
could you not be nursing?
could they not be nursing? 	could I not have nursed?
could you not have nursed?
could he not have nursed?
could we not have nursed?
could you not have nursed?
could they not have nursed? 	could I not have been nursing?
could you not have been nursing?
could he not have been nursing?
could we not have been nursing?
could you not have been nursing?
could they not have been nursing?