could chat
Verbo regular: chat - chatted- chatted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could chat
you could chat
he could chat
we could chat
you could chat
they could chat 	I could be chatting
you could be chatting
he could be chatting
we could be chatting
you could be chatting
they could be chatting	I could have chatted
you could have chatted
he could have chatted
we could have chatted
you could have chatted
they could have chatted	I could have been chatting
you could have been chatting
he could have been chatting
we could have been chatting
you could have been chatting
they could have been chatting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not chat
you could not chat
he could not chat
we could not chat
you could not chat
they could not chat 	I could not be chatting
you could not be chatting
he could not be chatting
we could not be chatting
you could not be chatting
they could not be chatting	I could not have chatted
you could not have chatted
he could not have chatted
we could not have chatted
you could not have chatted
they could not have chatted	I could not have been chatting
you could not have been chatting
he could not have been chatting
we could not have been chatting
you could not have been chatting
they could not have been chatting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I chat?
could you chat?
could he chat?
could we chat?
could you chat?
could they chat? 	could I be chatting?
could you be chatting?
could he be chatting?
could we be chatting?
could you be chatting?
could they be chatting? 	could I have chatted?
could you have chatted?
could he have chatted?
could we have chatted?
could you have chatted?
could they have chatted? 	could I have been chatting?
could you have been chatting?
could he have been chatting?
could we have been chatting?
could you have been chatting?
could they have been chatting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not chat?
could you not chat?
could he not chat?
could we not chat?
could you not chat?
could they not chat? 	could I not be chatting?
could you not be chatting?
could he not be chatting?
could we not be chatting?
could you not be chatting?
could they not be chatting? 	could I not have chatted?
could you not have chatted?
could he not have chatted?
could we not have chatted?
could you not have chatted?
could they not have chatted? 	could I not have been chatting?
could you not have been chatting?
could he not have been chatting?
could we not have been chatting?
could you not have been chatting?
could they not have been chatting?