could exact
Verbo regular: exact - exacted- exacted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could exact
you could exact
he could exact
we could exact
you could exact
they could exact 	I could be exacting
you could be exacting
he could be exacting
we could be exacting
you could be exacting
they could be exacting	I could have exacted
you could have exacted
he could have exacted
we could have exacted
you could have exacted
they could have exacted	I could have been exacting
you could have been exacting
he could have been exacting
we could have been exacting
you could have been exacting
they could have been exacting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't exact
you couldn't exact
he couldn't exact
we couldn't exact
you couldn't exact
they couldn't exact 	I couldn't be exacting
you couldn't be exacting
he couldn't be exacting
we couldn't be exacting
you couldn't be exacting
they couldn't be exacting	I couldn't have exacted
you couldn't have exacted
he couldn't have exacted
we couldn't have exacted
you couldn't have exacted
they couldn't have exacted	I couldn't have been exacting
you couldn't have been exacting
he couldn't have been exacting
we couldn't have been exacting
you couldn't have been exacting
they couldn't have been exacting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I exact?
could you exact?
could he exact?
could we exact?
could you exact?
could they exact? 	could I be exacting?
could you be exacting?
could he be exacting?
could we be exacting?
could you be exacting?
could they be exacting? 	could I have exacted?
could you have exacted?
could he have exacted?
could we have exacted?
could you have exacted?
could they have exacted? 	could I have been exacting?
could you have been exacting?
could he have been exacting?
could we have been exacting?
could you have been exacting?
could they have been exacting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I exact?
couldn't you exact?
couldn't he exact?
couldn't we exact?
couldn't you exact?
couldn't they exact? 	couldn't I be exacting?
couldn't you be exacting?
couldn't he be exacting?
couldn't we be exacting?
couldn't you be exacting?
couldn't they be exacting? 	couldn't I have exacted?
couldn't you have exacted?
couldn't he have exacted?
couldn't we have exacted?
couldn't you have exacted?
couldn't they have exacted? 	couldn't I have been exacting?
couldn't you have been exacting?
couldn't he have been exacting?
couldn't we have been exacting?
couldn't you have been exacting?
couldn't they have been exacting?