could hydrogenize
Verbo regular: hydrogenize - hydrogenized- hydrogenized

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could hydrogenize
you could hydrogenize
he could hydrogenize
we could hydrogenize
you could hydrogenize
they could hydrogenize 	I could be hydrogenizing
you could be hydrogenizing
he could be hydrogenizing
we could be hydrogenizing
you could be hydrogenizing
they could be hydrogenizing	I could have hydrogenized
you could have hydrogenized
he could have hydrogenized
we could have hydrogenized
you could have hydrogenized
they could have hydrogenized	I could have been hydrogenizing
you could have been hydrogenizing
he could have been hydrogenizing
we could have been hydrogenizing
you could have been hydrogenizing
they could have been hydrogenizing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not hydrogenize
you could not hydrogenize
he could not hydrogenize
we could not hydrogenize
you could not hydrogenize
they could not hydrogenize 	I could not be hydrogenizing
you could not be hydrogenizing
he could not be hydrogenizing
we could not be hydrogenizing
you could not be hydrogenizing
they could not be hydrogenizing	I could not have hydrogenized
you could not have hydrogenized
he could not have hydrogenized
we could not have hydrogenized
you could not have hydrogenized
they could not have hydrogenized	I could not have been hydrogenizing
you could not have been hydrogenizing
he could not have been hydrogenizing
we could not have been hydrogenizing
you could not have been hydrogenizing
they could not have been hydrogenizing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I hydrogenize?
could you hydrogenize?
could he hydrogenize?
could we hydrogenize?
could you hydrogenize?
could they hydrogenize? 	could I be hydrogenizing?
could you be hydrogenizing?
could he be hydrogenizing?
could we be hydrogenizing?
could you be hydrogenizing?
could they be hydrogenizing? 	could I have hydrogenized?
could you have hydrogenized?
could he have hydrogenized?
could we have hydrogenized?
could you have hydrogenized?
could they have hydrogenized? 	could I have been hydrogenizing?
could you have been hydrogenizing?
could he have been hydrogenizing?
could we have been hydrogenizing?
could you have been hydrogenizing?
could they have been hydrogenizing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not hydrogenize?
could you not hydrogenize?
could he not hydrogenize?
could we not hydrogenize?
could you not hydrogenize?
could they not hydrogenize? 	could I not be hydrogenizing?
could you not be hydrogenizing?
could he not be hydrogenizing?
could we not be hydrogenizing?
could you not be hydrogenizing?
could they not be hydrogenizing? 	could I not have hydrogenized?
could you not have hydrogenized?
could he not have hydrogenized?
could we not have hydrogenized?
could you not have hydrogenized?
could they not have hydrogenized? 	could I not have been hydrogenizing?
could you not have been hydrogenizing?
could he not have been hydrogenizing?
could we not have been hydrogenizing?
could you not have been hydrogenizing?
could they not have been hydrogenizing?