could curvet
Verbo regular: curvet - curveted- curveted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could curvet
you could curvet
he could curvet
we could curvet
you could curvet
they could curvet 	I could be curveting
you could be curveting
he could be curveting
we could be curveting
you could be curveting
they could be curveting	I could have curveted
you could have curveted
he could have curveted
we could have curveted
you could have curveted
they could have curveted	I could have been curveting
you could have been curveting
he could have been curveting
we could have been curveting
you could have been curveting
they could have been curveting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not curvet
you could not curvet
he could not curvet
we could not curvet
you could not curvet
they could not curvet 	I could not be curveting
you could not be curveting
he could not be curveting
we could not be curveting
you could not be curveting
they could not be curveting	I could not have curveted
you could not have curveted
he could not have curveted
we could not have curveted
you could not have curveted
they could not have curveted	I could not have been curveting
you could not have been curveting
he could not have been curveting
we could not have been curveting
you could not have been curveting
they could not have been curveting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I curvet?
could you curvet?
could he curvet?
could we curvet?
could you curvet?
could they curvet? 	could I be curveting?
could you be curveting?
could he be curveting?
could we be curveting?
could you be curveting?
could they be curveting? 	could I have curveted?
could you have curveted?
could he have curveted?
could we have curveted?
could you have curveted?
could they have curveted? 	could I have been curveting?
could you have been curveting?
could he have been curveting?
could we have been curveting?
could you have been curveting?
could they have been curveting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not curvet?
could you not curvet?
could he not curvet?
could we not curvet?
could you not curvet?
could they not curvet? 	could I not be curveting?
could you not be curveting?
could he not be curveting?
could we not be curveting?
could you not be curveting?
could they not be curveting? 	could I not have curveted?
could you not have curveted?
could he not have curveted?
could we not have curveted?
could you not have curveted?
could they not have curveted? 	could I not have been curveting?
could you not have been curveting?
could he not have been curveting?
could we not have been curveting?
could you not have been curveting?
could they not have been curveting?