could quaff
Verbo regular: quaff - quaffed- quaffed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could quaff
you could quaff
he could quaff
we could quaff
you could quaff
they could quaff 	I could be quaffing
you could be quaffing
he could be quaffing
we could be quaffing
you could be quaffing
they could be quaffing	I could have quaffed
you could have quaffed
he could have quaffed
we could have quaffed
you could have quaffed
they could have quaffed	I could have been quaffing
you could have been quaffing
he could have been quaffing
we could have been quaffing
you could have been quaffing
they could have been quaffing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't quaff
you couldn't quaff
he couldn't quaff
we couldn't quaff
you couldn't quaff
they couldn't quaff 	I couldn't be quaffing
you couldn't be quaffing
he couldn't be quaffing
we couldn't be quaffing
you couldn't be quaffing
they couldn't be quaffing	I couldn't have quaffed
you couldn't have quaffed
he couldn't have quaffed
we couldn't have quaffed
you couldn't have quaffed
they couldn't have quaffed	I couldn't have been quaffing
you couldn't have been quaffing
he couldn't have been quaffing
we couldn't have been quaffing
you couldn't have been quaffing
they couldn't have been quaffing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I quaff?
could you quaff?
could he quaff?
could we quaff?
could you quaff?
could they quaff? 	could I be quaffing?
could you be quaffing?
could he be quaffing?
could we be quaffing?
could you be quaffing?
could they be quaffing? 	could I have quaffed?
could you have quaffed?
could he have quaffed?
could we have quaffed?
could you have quaffed?
could they have quaffed? 	could I have been quaffing?
could you have been quaffing?
could he have been quaffing?
could we have been quaffing?
could you have been quaffing?
could they have been quaffing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I quaff?
couldn't you quaff?
couldn't he quaff?
couldn't we quaff?
couldn't you quaff?
couldn't they quaff? 	couldn't I be quaffing?
couldn't you be quaffing?
couldn't he be quaffing?
couldn't we be quaffing?
couldn't you be quaffing?
couldn't they be quaffing? 	couldn't I have quaffed?
couldn't you have quaffed?
couldn't he have quaffed?
couldn't we have quaffed?
couldn't you have quaffed?
couldn't they have quaffed? 	couldn't I have been quaffing?
couldn't you have been quaffing?
couldn't he have been quaffing?
couldn't we have been quaffing?
couldn't you have been quaffing?
couldn't they have been quaffing?