could hoarsen
Regular verb: hoarsen - hoarsened- hoarsened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could hoarsen
you could hoarsen
he could hoarsen
we could hoarsen
you could hoarsen
they could hoarsen 	I could be hoarsening
you could be hoarsening
he could be hoarsening
we could be hoarsening
you could be hoarsening
they could be hoarsening	I could have hoarsened
you could have hoarsened
he could have hoarsened
we could have hoarsened
you could have hoarsened
they could have hoarsened	I could have been hoarsening
you could have been hoarsening
he could have been hoarsening
we could have been hoarsening
you could have been hoarsening
they could have been hoarsening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not hoarsen
you could not hoarsen
he could not hoarsen
we could not hoarsen
you could not hoarsen
they could not hoarsen 	I could not be hoarsening
you could not be hoarsening
he could not be hoarsening
we could not be hoarsening
you could not be hoarsening
they could not be hoarsening	I could not have hoarsened
you could not have hoarsened
he could not have hoarsened
we could not have hoarsened
you could not have hoarsened
they could not have hoarsened	I could not have been hoarsening
you could not have been hoarsening
he could not have been hoarsening
we could not have been hoarsening
you could not have been hoarsening
they could not have been hoarsening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I hoarsen?
could you hoarsen?
could he hoarsen?
could we hoarsen?
could you hoarsen?
could they hoarsen? 	could I be hoarsening?
could you be hoarsening?
could he be hoarsening?
could we be hoarsening?
could you be hoarsening?
could they be hoarsening? 	could I have hoarsened?
could you have hoarsened?
could he have hoarsened?
could we have hoarsened?
could you have hoarsened?
could they have hoarsened? 	could I have been hoarsening?
could you have been hoarsening?
could he have been hoarsening?
could we have been hoarsening?
could you have been hoarsening?
could they have been hoarsening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not hoarsen?
could you not hoarsen?
could he not hoarsen?
could we not hoarsen?
could you not hoarsen?
could they not hoarsen? 	could I not be hoarsening?
could you not be hoarsening?
could he not be hoarsening?
could we not be hoarsening?
could you not be hoarsening?
could they not be hoarsening? 	could I not have hoarsened?
could you not have hoarsened?
could he not have hoarsened?
could we not have hoarsened?
could you not have hoarsened?
could they not have hoarsened? 	could I not have been hoarsening?
could you not have been hoarsening?
could he not have been hoarsening?
could we not have been hoarsening?
could you not have been hoarsening?
could they not have been hoarsening?