can sneeze
Regular verb: sneeze - sneezed- sneezed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can sneeze
you can sneeze
he can sneeze
we can sneeze
you can sneeze
they can sneeze 	I can be sneezing
you can be sneezing
he can be sneezing
we can be sneezing
you can be sneezing
they can be sneezing	I can have sneezed
you can have sneezed
he can have sneezed
we can have sneezed
you can have sneezed
they can have sneezed	I can have been sneezing
you can have been sneezing
he can have been sneezing
we can have been sneezing
you can have been sneezing
they can have been sneezing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot sneeze
you cannot sneeze
he cannot sneeze
we cannot sneeze
you cannot sneeze
they cannot sneeze 	I cannot be sneezing
you cannot be sneezing
he cannot be sneezing
we cannot be sneezing
you cannot be sneezing
they cannot be sneezing	I cannot have sneezed
you cannot have sneezed
he cannot have sneezed
we cannot have sneezed
you cannot have sneezed
they cannot have sneezed	I cannot have been sneezing
you cannot have been sneezing
he cannot have been sneezing
we cannot have been sneezing
you cannot have been sneezing
they cannot have been sneezing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I sneeze?
can you sneeze?
can he sneeze?
can we sneeze?
can you sneeze?
can they sneeze? 	can I be sneezing?
can you be sneezing?
can he be sneezing?
can we be sneezing?
can you be sneezing?
can they be sneezing? 	can I have sneezed?
can you have sneezed?
can he have sneezed?
can we have sneezed?
can you have sneezed?
can they have sneezed? 	can I have been sneezing?
can you have been sneezing?
can he have been sneezing?
can we have been sneezing?
can you have been sneezing?
can they have been sneezing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not sneeze?
can you not sneeze?
can he not sneeze?
can we not sneeze?
can you not sneeze?
can they not sneeze? 	can I not be sneezing?
can you not be sneezing?
can he not be sneezing?
can we not be sneezing?
can you not be sneezing?
can they not be sneezing? 	can I not have sneezed?
can you not have sneezed?
can he not have sneezed?
can we not have sneezed?
can you not have sneezed?
can they not have sneezed? 	can I not have been sneezing?
can you not have been sneezing?
can he not have been sneezing?
can we not have been sneezing?
can you not have been sneezing?
can they not have been sneezing?