could copolymerize
Regular verb: copolymerize - copolymerized- copolymerized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could copolymerize
you could copolymerize
she could copolymerize
we could copolymerize
you could copolymerize
they could copolymerize 	I could be copolymerizing
you could be copolymerizing
she could be copolymerizing
we could be copolymerizing
you could be copolymerizing
they could be copolymerizing	I could have copolymerized
you could have copolymerized
she could have copolymerized
we could have copolymerized
you could have copolymerized
they could have copolymerized	I could have been copolymerizing
you could have been copolymerizing
she could have been copolymerizing
we could have been copolymerizing
you could have been copolymerizing
they could have been copolymerizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't copolymerize
you couldn't copolymerize
she couldn't copolymerize
we couldn't copolymerize
you couldn't copolymerize
they couldn't copolymerize 	I couldn't be copolymerizing
you couldn't be copolymerizing
she couldn't be copolymerizing
we couldn't be copolymerizing
you couldn't be copolymerizing
they couldn't be copolymerizing	I couldn't have copolymerized
you couldn't have copolymerized
she couldn't have copolymerized
we couldn't have copolymerized
you couldn't have copolymerized
they couldn't have copolymerized	I couldn't have been copolymerizing
you couldn't have been copolymerizing
she couldn't have been copolymerizing
we couldn't have been copolymerizing
you couldn't have been copolymerizing
they couldn't have been copolymerizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I copolymerize?
could you copolymerize?
could she copolymerize?
could we copolymerize?
could you copolymerize?
could they copolymerize? 	could I be copolymerizing?
could you be copolymerizing?
could she be copolymerizing?
could we be copolymerizing?
could you be copolymerizing?
could they be copolymerizing? 	could I have copolymerized?
could you have copolymerized?
could she have copolymerized?
could we have copolymerized?
could you have copolymerized?
could they have copolymerized? 	could I have been copolymerizing?
could you have been copolymerizing?
could she have been copolymerizing?
could we have been copolymerizing?
could you have been copolymerizing?
could they have been copolymerizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I copolymerize?
couldn't you copolymerize?
couldn't she copolymerize?
couldn't we copolymerize?
couldn't you copolymerize?
couldn't they copolymerize? 	couldn't I be copolymerizing?
couldn't you be copolymerizing?
couldn't she be copolymerizing?
couldn't we be copolymerizing?
couldn't you be copolymerizing?
couldn't they be copolymerizing? 	couldn't I have copolymerized?
couldn't you have copolymerized?
couldn't she have copolymerized?
couldn't we have copolymerized?
couldn't you have copolymerized?
couldn't they have copolymerized? 	couldn't I have been copolymerizing?
couldn't you have been copolymerizing?
couldn't she have been copolymerizing?
couldn't we have been copolymerizing?
couldn't you have been copolymerizing?
couldn't they have been copolymerizing?