could chaff
Verbo regular: chaff - chaffed- chaffed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could chaff
you could chaff
he could chaff
we could chaff
you could chaff
they could chaff 	I could be chaffing
you could be chaffing
he could be chaffing
we could be chaffing
you could be chaffing
they could be chaffing	I could have chaffed
you could have chaffed
he could have chaffed
we could have chaffed
you could have chaffed
they could have chaffed	I could have been chaffing
you could have been chaffing
he could have been chaffing
we could have been chaffing
you could have been chaffing
they could have been chaffing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not chaff
you could not chaff
he could not chaff
we could not chaff
you could not chaff
they could not chaff 	I could not be chaffing
you could not be chaffing
he could not be chaffing
we could not be chaffing
you could not be chaffing
they could not be chaffing	I could not have chaffed
you could not have chaffed
he could not have chaffed
we could not have chaffed
you could not have chaffed
they could not have chaffed	I could not have been chaffing
you could not have been chaffing
he could not have been chaffing
we could not have been chaffing
you could not have been chaffing
they could not have been chaffing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I chaff?
could you chaff?
could he chaff?
could we chaff?
could you chaff?
could they chaff? 	could I be chaffing?
could you be chaffing?
could he be chaffing?
could we be chaffing?
could you be chaffing?
could they be chaffing? 	could I have chaffed?
could you have chaffed?
could he have chaffed?
could we have chaffed?
could you have chaffed?
could they have chaffed? 	could I have been chaffing?
could you have been chaffing?
could he have been chaffing?
could we have been chaffing?
could you have been chaffing?
could they have been chaffing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not chaff?
could you not chaff?
could he not chaff?
could we not chaff?
could you not chaff?
could they not chaff? 	could I not be chaffing?
could you not be chaffing?
could he not be chaffing?
could we not be chaffing?
could you not be chaffing?
could they not be chaffing? 	could I not have chaffed?
could you not have chaffed?
could he not have chaffed?
could we not have chaffed?
could you not have chaffed?
could they not have chaffed? 	could I not have been chaffing?
could you not have been chaffing?
could he not have been chaffing?
could we not have been chaffing?
could you not have been chaffing?
could they not have been chaffing?