could overuse
Regular verb: overuse - overused- overused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could overuse
you could overuse
he could overuse
we could overuse
you could overuse
they could overuse 	I could be overusing
you could be overusing
he could be overusing
we could be overusing
you could be overusing
they could be overusing	I could have overused
you could have overused
he could have overused
we could have overused
you could have overused
they could have overused	I could have been overusing
you could have been overusing
he could have been overusing
we could have been overusing
you could have been overusing
they could have been overusing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't overuse
you couldn't overuse
he couldn't overuse
we couldn't overuse
you couldn't overuse
they couldn't overuse 	I couldn't be overusing
you couldn't be overusing
he couldn't be overusing
we couldn't be overusing
you couldn't be overusing
they couldn't be overusing	I couldn't have overused
you couldn't have overused
he couldn't have overused
we couldn't have overused
you couldn't have overused
they couldn't have overused	I couldn't have been overusing
you couldn't have been overusing
he couldn't have been overusing
we couldn't have been overusing
you couldn't have been overusing
they couldn't have been overusing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overuse?
could you overuse?
could he overuse?
could we overuse?
could you overuse?
could they overuse? 	could I be overusing?
could you be overusing?
could he be overusing?
could we be overusing?
could you be overusing?
could they be overusing? 	could I have overused?
could you have overused?
could he have overused?
could we have overused?
could you have overused?
could they have overused? 	could I have been overusing?
could you have been overusing?
could he have been overusing?
could we have been overusing?
could you have been overusing?
could they have been overusing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I overuse?
couldn't you overuse?
couldn't he overuse?
couldn't we overuse?
couldn't you overuse?
couldn't they overuse? 	couldn't I be overusing?
couldn't you be overusing?
couldn't he be overusing?
couldn't we be overusing?
couldn't you be overusing?
couldn't they be overusing? 	couldn't I have overused?
couldn't you have overused?
couldn't he have overused?
couldn't we have overused?
couldn't you have overused?
couldn't they have overused? 	couldn't I have been overusing?
couldn't you have been overusing?
couldn't he have been overusing?
couldn't we have been overusing?
couldn't you have been overusing?
couldn't they have been overusing?