could hydroplane
Regular verb: hydroplane - hydroplaned- hydroplaned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could hydroplane
you could hydroplane
she could hydroplane
we could hydroplane
you could hydroplane
they could hydroplane 	I could be hydroplaning
you could be hydroplaning
she could be hydroplaning
we could be hydroplaning
you could be hydroplaning
they could be hydroplaning	I could have hydroplaned
you could have hydroplaned
she could have hydroplaned
we could have hydroplaned
you could have hydroplaned
they could have hydroplaned	I could have been hydroplaning
you could have been hydroplaning
she could have been hydroplaning
we could have been hydroplaning
you could have been hydroplaning
they could have been hydroplaning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't hydroplane
you couldn't hydroplane
she couldn't hydroplane
we couldn't hydroplane
you couldn't hydroplane
they couldn't hydroplane 	I couldn't be hydroplaning
you couldn't be hydroplaning
she couldn't be hydroplaning
we couldn't be hydroplaning
you couldn't be hydroplaning
they couldn't be hydroplaning	I couldn't have hydroplaned
you couldn't have hydroplaned
she couldn't have hydroplaned
we couldn't have hydroplaned
you couldn't have hydroplaned
they couldn't have hydroplaned	I couldn't have been hydroplaning
you couldn't have been hydroplaning
she couldn't have been hydroplaning
we couldn't have been hydroplaning
you couldn't have been hydroplaning
they couldn't have been hydroplaning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I hydroplane?
could you hydroplane?
could she hydroplane?
could we hydroplane?
could you hydroplane?
could they hydroplane? 	could I be hydroplaning?
could you be hydroplaning?
could she be hydroplaning?
could we be hydroplaning?
could you be hydroplaning?
could they be hydroplaning? 	could I have hydroplaned?
could you have hydroplaned?
could she have hydroplaned?
could we have hydroplaned?
could you have hydroplaned?
could they have hydroplaned? 	could I have been hydroplaning?
could you have been hydroplaning?
could she have been hydroplaning?
could we have been hydroplaning?
could you have been hydroplaning?
could they have been hydroplaning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I hydroplane?
couldn't you hydroplane?
couldn't she hydroplane?
couldn't we hydroplane?
couldn't you hydroplane?
couldn't they hydroplane? 	couldn't I be hydroplaning?
couldn't you be hydroplaning?
couldn't she be hydroplaning?
couldn't we be hydroplaning?
couldn't you be hydroplaning?
couldn't they be hydroplaning? 	couldn't I have hydroplaned?
couldn't you have hydroplaned?
couldn't she have hydroplaned?
couldn't we have hydroplaned?
couldn't you have hydroplaned?
couldn't they have hydroplaned? 	couldn't I have been hydroplaning?
couldn't you have been hydroplaning?
couldn't she have been hydroplaning?
couldn't we have been hydroplaning?
couldn't you have been hydroplaning?
couldn't they have been hydroplaning?