could coarsen
Verbo regular: coarsen - coarsened- coarsened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could coarsen
you could coarsen
he could coarsen
we could coarsen
you could coarsen
they could coarsen 	I could be coarsening
you could be coarsening
he could be coarsening
we could be coarsening
you could be coarsening
they could be coarsening	I could have coarsened
you could have coarsened
he could have coarsened
we could have coarsened
you could have coarsened
they could have coarsened	I could have been coarsening
you could have been coarsening
he could have been coarsening
we could have been coarsening
you could have been coarsening
they could have been coarsening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't coarsen
you couldn't coarsen
he couldn't coarsen
we couldn't coarsen
you couldn't coarsen
they couldn't coarsen 	I couldn't be coarsening
you couldn't be coarsening
he couldn't be coarsening
we couldn't be coarsening
you couldn't be coarsening
they couldn't be coarsening	I couldn't have coarsened
you couldn't have coarsened
he couldn't have coarsened
we couldn't have coarsened
you couldn't have coarsened
they couldn't have coarsened	I couldn't have been coarsening
you couldn't have been coarsening
he couldn't have been coarsening
we couldn't have been coarsening
you couldn't have been coarsening
they couldn't have been coarsening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I coarsen?
could you coarsen?
could he coarsen?
could we coarsen?
could you coarsen?
could they coarsen? 	could I be coarsening?
could you be coarsening?
could he be coarsening?
could we be coarsening?
could you be coarsening?
could they be coarsening? 	could I have coarsened?
could you have coarsened?
could he have coarsened?
could we have coarsened?
could you have coarsened?
could they have coarsened? 	could I have been coarsening?
could you have been coarsening?
could he have been coarsening?
could we have been coarsening?
could you have been coarsening?
could they have been coarsening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I coarsen?
couldn't you coarsen?
couldn't he coarsen?
couldn't we coarsen?
couldn't you coarsen?
couldn't they coarsen? 	couldn't I be coarsening?
couldn't you be coarsening?
couldn't he be coarsening?
couldn't we be coarsening?
couldn't you be coarsening?
couldn't they be coarsening? 	couldn't I have coarsened?
couldn't you have coarsened?
couldn't he have coarsened?
couldn't we have coarsened?
couldn't you have coarsened?
couldn't they have coarsened? 	couldn't I have been coarsening?
couldn't you have been coarsening?
couldn't he have been coarsening?
couldn't we have been coarsening?
couldn't you have been coarsening?
couldn't they have been coarsening?