could overwork
Verbo regular: overwork - overworked- overworked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could overwork
you could overwork
he could overwork
we could overwork
you could overwork
they could overwork 	I could be overworking
you could be overworking
he could be overworking
we could be overworking
you could be overworking
they could be overworking	I could have overworked
you could have overworked
he could have overworked
we could have overworked
you could have overworked
they could have overworked	I could have been overworking
you could have been overworking
he could have been overworking
we could have been overworking
you could have been overworking
they could have been overworking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not overwork
you could not overwork
he could not overwork
we could not overwork
you could not overwork
they could not overwork 	I could not be overworking
you could not be overworking
he could not be overworking
we could not be overworking
you could not be overworking
they could not be overworking	I could not have overworked
you could not have overworked
he could not have overworked
we could not have overworked
you could not have overworked
they could not have overworked	I could not have been overworking
you could not have been overworking
he could not have been overworking
we could not have been overworking
you could not have been overworking
they could not have been overworking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I overwork?
could you overwork?
could he overwork?
could we overwork?
could you overwork?
could they overwork? 	could I be overworking?
could you be overworking?
could he be overworking?
could we be overworking?
could you be overworking?
could they be overworking? 	could I have overworked?
could you have overworked?
could he have overworked?
could we have overworked?
could you have overworked?
could they have overworked? 	could I have been overworking?
could you have been overworking?
could he have been overworking?
could we have been overworking?
could you have been overworking?
could they have been overworking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not overwork?
could you not overwork?
could he not overwork?
could we not overwork?
could you not overwork?
could they not overwork? 	could I not be overworking?
could you not be overworking?
could he not be overworking?
could we not be overworking?
could you not be overworking?
could they not be overworking? 	could I not have overworked?
could you not have overworked?
could he not have overworked?
could we not have overworked?
could you not have overworked?
could they not have overworked? 	could I not have been overworking?
could you not have been overworking?
could he not have been overworking?
could we not have been overworking?
could you not have been overworking?
could they not have been overworking?