can shred
Regular verb: shred - shredded- shredded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can shred
you can shred
she can shred
we can shred
you can shred
they can shred 	I can be shredding
you can be shredding
she can be shredding
we can be shredding
you can be shredding
they can be shredding	I can have shredded
you can have shredded
she can have shredded
we can have shredded
you can have shredded
they can have shredded	I can have been shredding
you can have been shredding
she can have been shredding
we can have been shredding
you can have been shredding
they can have been shredding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't shred
you can't shred
she can't shred
we can't shred
you can't shred
they can't shred 	I can't be shredding
you can't be shredding
she can't be shredding
we can't be shredding
you can't be shredding
they can't be shredding	I can't have shredded
you can't have shredded
she can't have shredded
we can't have shredded
you can't have shredded
they can't have shredded	I can't have been shredding
you can't have been shredding
she can't have been shredding
we can't have been shredding
you can't have been shredding
they can't have been shredding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I shred?
can you shred?
can she shred?
can we shred?
can you shred?
can they shred? 	can I be shredding?
can you be shredding?
can she be shredding?
can we be shredding?
can you be shredding?
can they be shredding? 	can I have shredded?
can you have shredded?
can she have shredded?
can we have shredded?
can you have shredded?
can they have shredded? 	can I have been shredding?
can you have been shredding?
can she have been shredding?
can we have been shredding?
can you have been shredding?
can they have been shredding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I shred?
can't you shred?
can't she shred?
can't we shred?
can't you shred?
can't they shred? 	can't I be shredding?
can't you be shredding?
can't she be shredding?
can't we be shredding?
can't you be shredding?
can't they be shredding? 	can't I have shredded?
can't you have shredded?
can't she have shredded?
can't we have shredded?
can't you have shredded?
can't they have shredded? 	can't I have been shredding?
can't you have been shredding?
can't she have been shredding?
can't we have been shredding?
can't you have been shredding?
can't they have been shredding?