could aquaplane
Regular verb: aquaplane - aquaplaned- aquaplaned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could aquaplane
you could aquaplane
he could aquaplane
we could aquaplane
you could aquaplane
they could aquaplane 	I could be aquaplaning
you could be aquaplaning
he could be aquaplaning
we could be aquaplaning
you could be aquaplaning
they could be aquaplaning	I could have aquaplaned
you could have aquaplaned
he could have aquaplaned
we could have aquaplaned
you could have aquaplaned
they could have aquaplaned	I could have been aquaplaning
you could have been aquaplaning
he could have been aquaplaning
we could have been aquaplaning
you could have been aquaplaning
they could have been aquaplaning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not aquaplane
you could not aquaplane
he could not aquaplane
we could not aquaplane
you could not aquaplane
they could not aquaplane 	I could not be aquaplaning
you could not be aquaplaning
he could not be aquaplaning
we could not be aquaplaning
you could not be aquaplaning
they could not be aquaplaning	I could not have aquaplaned
you could not have aquaplaned
he could not have aquaplaned
we could not have aquaplaned
you could not have aquaplaned
they could not have aquaplaned	I could not have been aquaplaning
you could not have been aquaplaning
he could not have been aquaplaning
we could not have been aquaplaning
you could not have been aquaplaning
they could not have been aquaplaning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I aquaplane?
could you aquaplane?
could he aquaplane?
could we aquaplane?
could you aquaplane?
could they aquaplane? 	could I be aquaplaning?
could you be aquaplaning?
could he be aquaplaning?
could we be aquaplaning?
could you be aquaplaning?
could they be aquaplaning? 	could I have aquaplaned?
could you have aquaplaned?
could he have aquaplaned?
could we have aquaplaned?
could you have aquaplaned?
could they have aquaplaned? 	could I have been aquaplaning?
could you have been aquaplaning?
could he have been aquaplaning?
could we have been aquaplaning?
could you have been aquaplaning?
could they have been aquaplaning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not aquaplane?
could you not aquaplane?
could he not aquaplane?
could we not aquaplane?
could you not aquaplane?
could they not aquaplane? 	could I not be aquaplaning?
could you not be aquaplaning?
could he not be aquaplaning?
could we not be aquaplaning?
could you not be aquaplaning?
could they not be aquaplaning? 	could I not have aquaplaned?
could you not have aquaplaned?
could he not have aquaplaned?
could we not have aquaplaned?
could you not have aquaplaned?
could they not have aquaplaned? 	could I not have been aquaplaning?
could you not have been aquaplaning?
could he not have been aquaplaning?
could we not have been aquaplaning?
could you not have been aquaplaning?
could they not have been aquaplaning?