could sneeze
Verbo regular: sneeze - sneezed- sneezed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could sneeze
you could sneeze
she could sneeze
we could sneeze
you could sneeze
they could sneeze 	I could be sneezing
you could be sneezing
she could be sneezing
we could be sneezing
you could be sneezing
they could be sneezing	I could have sneezed
you could have sneezed
she could have sneezed
we could have sneezed
you could have sneezed
they could have sneezed	I could have been sneezing
you could have been sneezing
she could have been sneezing
we could have been sneezing
you could have been sneezing
they could have been sneezing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not sneeze
you could not sneeze
she could not sneeze
we could not sneeze
you could not sneeze
they could not sneeze 	I could not be sneezing
you could not be sneezing
she could not be sneezing
we could not be sneezing
you could not be sneezing
they could not be sneezing	I could not have sneezed
you could not have sneezed
she could not have sneezed
we could not have sneezed
you could not have sneezed
they could not have sneezed	I could not have been sneezing
you could not have been sneezing
she could not have been sneezing
we could not have been sneezing
you could not have been sneezing
they could not have been sneezing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I sneeze?
could you sneeze?
could she sneeze?
could we sneeze?
could you sneeze?
could they sneeze? 	could I be sneezing?
could you be sneezing?
could she be sneezing?
could we be sneezing?
could you be sneezing?
could they be sneezing? 	could I have sneezed?
could you have sneezed?
could she have sneezed?
could we have sneezed?
could you have sneezed?
could they have sneezed? 	could I have been sneezing?
could you have been sneezing?
could she have been sneezing?
could we have been sneezing?
could you have been sneezing?
could they have been sneezing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not sneeze?
could you not sneeze?
could she not sneeze?
could we not sneeze?
could you not sneeze?
could they not sneeze? 	could I not be sneezing?
could you not be sneezing?
could she not be sneezing?
could we not be sneezing?
could you not be sneezing?
could they not be sneezing? 	could I not have sneezed?
could you not have sneezed?
could she not have sneezed?
could we not have sneezed?
could you not have sneezed?
could they not have sneezed? 	could I not have been sneezing?
could you not have been sneezing?
could she not have been sneezing?
could we not have been sneezing?
could you not have been sneezing?
could they not have been sneezing?