could stretch
Verbo regular: stretch - stretched- stretched

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could stretch
you could stretch
she could stretch
we could stretch
you could stretch
they could stretch 	I could be stretching
you could be stretching
she could be stretching
we could be stretching
you could be stretching
they could be stretching	I could have stretched
you could have stretched
she could have stretched
we could have stretched
you could have stretched
they could have stretched	I could have been stretching
you could have been stretching
she could have been stretching
we could have been stretching
you could have been stretching
they could have been stretching	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not stretch
you could not stretch
she could not stretch
we could not stretch
you could not stretch
they could not stretch 	I could not be stretching
you could not be stretching
she could not be stretching
we could not be stretching
you could not be stretching
they could not be stretching	I could not have stretched
you could not have stretched
she could not have stretched
we could not have stretched
you could not have stretched
they could not have stretched	I could not have been stretching
you could not have been stretching
she could not have been stretching
we could not have been stretching
you could not have been stretching
they could not have been stretching	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I stretch?
could you stretch?
could she stretch?
could we stretch?
could you stretch?
could they stretch? 	could I be stretching?
could you be stretching?
could she be stretching?
could we be stretching?
could you be stretching?
could they be stretching? 	could I have stretched?
could you have stretched?
could she have stretched?
could we have stretched?
could you have stretched?
could they have stretched? 	could I have been stretching?
could you have been stretching?
could she have been stretching?
could we have been stretching?
could you have been stretching?
could they have been stretching? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not stretch?
could you not stretch?
could she not stretch?
could we not stretch?
could you not stretch?
could they not stretch? 	could I not be stretching?
could you not be stretching?
could she not be stretching?
could we not be stretching?
could you not be stretching?
could they not be stretching? 	could I not have stretched?
could you not have stretched?
could she not have stretched?
could we not have stretched?
could you not have stretched?
could they not have stretched? 	could I not have been stretching?
could you not have been stretching?
could she not have been stretching?
could we not have been stretching?
could you not have been stretching?
could they not have been stretching?