could hydrolyze
Regular verb: hydrolyze - hydrolyzed- hydrolyzed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could hydrolyze
you could hydrolyze
she could hydrolyze
we could hydrolyze
you could hydrolyze
they could hydrolyze 	I could be hydrolyzing
you could be hydrolyzing
she could be hydrolyzing
we could be hydrolyzing
you could be hydrolyzing
they could be hydrolyzing	I could have hydrolyzed
you could have hydrolyzed
she could have hydrolyzed
we could have hydrolyzed
you could have hydrolyzed
they could have hydrolyzed	I could have been hydrolyzing
you could have been hydrolyzing
she could have been hydrolyzing
we could have been hydrolyzing
you could have been hydrolyzing
they could have been hydrolyzing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't hydrolyze
you couldn't hydrolyze
she couldn't hydrolyze
we couldn't hydrolyze
you couldn't hydrolyze
they couldn't hydrolyze 	I couldn't be hydrolyzing
you couldn't be hydrolyzing
she couldn't be hydrolyzing
we couldn't be hydrolyzing
you couldn't be hydrolyzing
they couldn't be hydrolyzing	I couldn't have hydrolyzed
you couldn't have hydrolyzed
she couldn't have hydrolyzed
we couldn't have hydrolyzed
you couldn't have hydrolyzed
they couldn't have hydrolyzed	I couldn't have been hydrolyzing
you couldn't have been hydrolyzing
she couldn't have been hydrolyzing
we couldn't have been hydrolyzing
you couldn't have been hydrolyzing
they couldn't have been hydrolyzing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I hydrolyze?
could you hydrolyze?
could she hydrolyze?
could we hydrolyze?
could you hydrolyze?
could they hydrolyze? 	could I be hydrolyzing?
could you be hydrolyzing?
could she be hydrolyzing?
could we be hydrolyzing?
could you be hydrolyzing?
could they be hydrolyzing? 	could I have hydrolyzed?
could you have hydrolyzed?
could she have hydrolyzed?
could we have hydrolyzed?
could you have hydrolyzed?
could they have hydrolyzed? 	could I have been hydrolyzing?
could you have been hydrolyzing?
could she have been hydrolyzing?
could we have been hydrolyzing?
could you have been hydrolyzing?
could they have been hydrolyzing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I hydrolyze?
couldn't you hydrolyze?
couldn't she hydrolyze?
couldn't we hydrolyze?
couldn't you hydrolyze?
couldn't they hydrolyze? 	couldn't I be hydrolyzing?
couldn't you be hydrolyzing?
couldn't she be hydrolyzing?
couldn't we be hydrolyzing?
couldn't you be hydrolyzing?
couldn't they be hydrolyzing? 	couldn't I have hydrolyzed?
couldn't you have hydrolyzed?
couldn't she have hydrolyzed?
couldn't we have hydrolyzed?
couldn't you have hydrolyzed?
couldn't they have hydrolyzed? 	couldn't I have been hydrolyzing?
couldn't you have been hydrolyzing?
couldn't she have been hydrolyzing?
couldn't we have been hydrolyzing?
couldn't you have been hydrolyzing?
couldn't they have been hydrolyzing?