could shred
Verbo regular: shred - shredded- shredded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could shred
you could shred
he could shred
we could shred
you could shred
they could shred 	I could be shredding
you could be shredding
he could be shredding
we could be shredding
you could be shredding
they could be shredding	I could have shredded
you could have shredded
he could have shredded
we could have shredded
you could have shredded
they could have shredded	I could have been shredding
you could have been shredding
he could have been shredding
we could have been shredding
you could have been shredding
they could have been shredding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not shred
you could not shred
he could not shred
we could not shred
you could not shred
they could not shred 	I could not be shredding
you could not be shredding
he could not be shredding
we could not be shredding
you could not be shredding
they could not be shredding	I could not have shredded
you could not have shredded
he could not have shredded
we could not have shredded
you could not have shredded
they could not have shredded	I could not have been shredding
you could not have been shredding
he could not have been shredding
we could not have been shredding
you could not have been shredding
they could not have been shredding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I shred?
could you shred?
could he shred?
could we shred?
could you shred?
could they shred? 	could I be shredding?
could you be shredding?
could he be shredding?
could we be shredding?
could you be shredding?
could they be shredding? 	could I have shredded?
could you have shredded?
could he have shredded?
could we have shredded?
could you have shredded?
could they have shredded? 	could I have been shredding?
could you have been shredding?
could he have been shredding?
could we have been shredding?
could you have been shredding?
could they have been shredding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not shred?
could you not shred?
could he not shred?
could we not shred?
could you not shred?
could they not shred? 	could I not be shredding?
could you not be shredding?
could he not be shredding?
could we not be shredding?
could you not be shredding?
could they not be shredding? 	could I not have shredded?
could you not have shredded?
could he not have shredded?
could we not have shredded?
could you not have shredded?
could they not have shredded? 	could I not have been shredding?
could you not have been shredding?
could he not have been shredding?
could we not have been shredding?
could you not have been shredding?
could they not have been shredding?