could buoy
Regular verb: buoy - buoyed- buoyed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could buoy
you could buoy
he could buoy
we could buoy
you could buoy
they could buoy 	I could be buoying
you could be buoying
he could be buoying
we could be buoying
you could be buoying
they could be buoying	I could have buoyed
you could have buoyed
he could have buoyed
we could have buoyed
you could have buoyed
they could have buoyed	I could have been buoying
you could have been buoying
he could have been buoying
we could have been buoying
you could have been buoying
they could have been buoying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not buoy
you could not buoy
he could not buoy
we could not buoy
you could not buoy
they could not buoy 	I could not be buoying
you could not be buoying
he could not be buoying
we could not be buoying
you could not be buoying
they could not be buoying	I could not have buoyed
you could not have buoyed
he could not have buoyed
we could not have buoyed
you could not have buoyed
they could not have buoyed	I could not have been buoying
you could not have been buoying
he could not have been buoying
we could not have been buoying
you could not have been buoying
they could not have been buoying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I buoy?
could you buoy?
could he buoy?
could we buoy?
could you buoy?
could they buoy? 	could I be buoying?
could you be buoying?
could he be buoying?
could we be buoying?
could you be buoying?
could they be buoying? 	could I have buoyed?
could you have buoyed?
could he have buoyed?
could we have buoyed?
could you have buoyed?
could they have buoyed? 	could I have been buoying?
could you have been buoying?
could he have been buoying?
could we have been buoying?
could you have been buoying?
could they have been buoying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not buoy?
could you not buoy?
could he not buoy?
could we not buoy?
could you not buoy?
could they not buoy? 	could I not be buoying?
could you not be buoying?
could he not be buoying?
could we not be buoying?
could you not be buoying?
could they not be buoying? 	could I not have buoyed?
could you not have buoyed?
could he not have buoyed?
could we not have buoyed?
could you not have buoyed?
could they not have buoyed? 	could I not have been buoying?
could you not have been buoying?
could he not have been buoying?
could we not have been buoying?
could you not have been buoying?
could they not have been buoying?