could depolymerize
Regular verb: depolymerize - depolymerized- depolymerized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could depolymerize
you could depolymerize
he could depolymerize
we could depolymerize
you could depolymerize
they could depolymerize 	I could be depolymerizing
you could be depolymerizing
he could be depolymerizing
we could be depolymerizing
you could be depolymerizing
they could be depolymerizing	I could have depolymerized
you could have depolymerized
he could have depolymerized
we could have depolymerized
you could have depolymerized
they could have depolymerized	I could have been depolymerizing
you could have been depolymerizing
he could have been depolymerizing
we could have been depolymerizing
you could have been depolymerizing
they could have been depolymerizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't depolymerize
you couldn't depolymerize
he couldn't depolymerize
we couldn't depolymerize
you couldn't depolymerize
they couldn't depolymerize 	I couldn't be depolymerizing
you couldn't be depolymerizing
he couldn't be depolymerizing
we couldn't be depolymerizing
you couldn't be depolymerizing
they couldn't be depolymerizing	I couldn't have depolymerized
you couldn't have depolymerized
he couldn't have depolymerized
we couldn't have depolymerized
you couldn't have depolymerized
they couldn't have depolymerized	I couldn't have been depolymerizing
you couldn't have been depolymerizing
he couldn't have been depolymerizing
we couldn't have been depolymerizing
you couldn't have been depolymerizing
they couldn't have been depolymerizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I depolymerize?
could you depolymerize?
could he depolymerize?
could we depolymerize?
could you depolymerize?
could they depolymerize? 	could I be depolymerizing?
could you be depolymerizing?
could he be depolymerizing?
could we be depolymerizing?
could you be depolymerizing?
could they be depolymerizing? 	could I have depolymerized?
could you have depolymerized?
could he have depolymerized?
could we have depolymerized?
could you have depolymerized?
could they have depolymerized? 	could I have been depolymerizing?
could you have been depolymerizing?
could he have been depolymerizing?
could we have been depolymerizing?
could you have been depolymerizing?
could they have been depolymerizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I depolymerize?
couldn't you depolymerize?
couldn't he depolymerize?
couldn't we depolymerize?
couldn't you depolymerize?
couldn't they depolymerize? 	couldn't I be depolymerizing?
couldn't you be depolymerizing?
couldn't he be depolymerizing?
couldn't we be depolymerizing?
couldn't you be depolymerizing?
couldn't they be depolymerizing? 	couldn't I have depolymerized?
couldn't you have depolymerized?
couldn't he have depolymerized?
couldn't we have depolymerized?
couldn't you have depolymerized?
couldn't they have depolymerized? 	couldn't I have been depolymerizing?
couldn't you have been depolymerizing?
couldn't he have been depolymerizing?
couldn't we have been depolymerizing?
couldn't you have been depolymerizing?
couldn't they have been depolymerizing?