could pollute
Verbo regular: pollute - polluted- polluted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could pollute
you could pollute
he could pollute
we could pollute
you could pollute
they could pollute 	I could be polluting
you could be polluting
he could be polluting
we could be polluting
you could be polluting
they could be polluting	I could have polluted
you could have polluted
he could have polluted
we could have polluted
you could have polluted
they could have polluted	I could have been polluting
you could have been polluting
he could have been polluting
we could have been polluting
you could have been polluting
they could have been polluting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not pollute
you could not pollute
he could not pollute
we could not pollute
you could not pollute
they could not pollute 	I could not be polluting
you could not be polluting
he could not be polluting
we could not be polluting
you could not be polluting
they could not be polluting	I could not have polluted
you could not have polluted
he could not have polluted
we could not have polluted
you could not have polluted
they could not have polluted	I could not have been polluting
you could not have been polluting
he could not have been polluting
we could not have been polluting
you could not have been polluting
they could not have been polluting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I pollute?
could you pollute?
could he pollute?
could we pollute?
could you pollute?
could they pollute? 	could I be polluting?
could you be polluting?
could he be polluting?
could we be polluting?
could you be polluting?
could they be polluting? 	could I have polluted?
could you have polluted?
could he have polluted?
could we have polluted?
could you have polluted?
could they have polluted? 	could I have been polluting?
could you have been polluting?
could he have been polluting?
could we have been polluting?
could you have been polluting?
could they have been polluting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not pollute?
could you not pollute?
could he not pollute?
could we not pollute?
could you not pollute?
could they not pollute? 	could I not be polluting?
could you not be polluting?
could he not be polluting?
could we not be polluting?
could you not be polluting?
could they not be polluting? 	could I not have polluted?
could you not have polluted?
could he not have polluted?
could we not have polluted?
could you not have polluted?
could they not have polluted? 	could I not have been polluting?
could you not have been polluting?
could he not have been polluting?
could we not have been polluting?
could you not have been polluting?
could they not have been polluting?