can overstay
Regular verb: overstay - overstayed- overstayed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can overstay
you can overstay
he can overstay
we can overstay
you can overstay
they can overstay 	I can be overstaying
you can be overstaying
he can be overstaying
we can be overstaying
you can be overstaying
they can be overstaying	I can have overstayed
you can have overstayed
he can have overstayed
we can have overstayed
you can have overstayed
they can have overstayed	I can have been overstaying
you can have been overstaying
he can have been overstaying
we can have been overstaying
you can have been overstaying
they can have been overstaying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot overstay
you cannot overstay
he cannot overstay
we cannot overstay
you cannot overstay
they cannot overstay 	I cannot be overstaying
you cannot be overstaying
he cannot be overstaying
we cannot be overstaying
you cannot be overstaying
they cannot be overstaying	I cannot have overstayed
you cannot have overstayed
he cannot have overstayed
we cannot have overstayed
you cannot have overstayed
they cannot have overstayed	I cannot have been overstaying
you cannot have been overstaying
he cannot have been overstaying
we cannot have been overstaying
you cannot have been overstaying
they cannot have been overstaying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I overstay?
can you overstay?
can he overstay?
can we overstay?
can you overstay?
can they overstay? 	can I be overstaying?
can you be overstaying?
can he be overstaying?
can we be overstaying?
can you be overstaying?
can they be overstaying? 	can I have overstayed?
can you have overstayed?
can he have overstayed?
can we have overstayed?
can you have overstayed?
can they have overstayed? 	can I have been overstaying?
can you have been overstaying?
can he have been overstaying?
can we have been overstaying?
can you have been overstaying?
can they have been overstaying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not overstay?
can you not overstay?
can he not overstay?
can we not overstay?
can you not overstay?
can they not overstay? 	can I not be overstaying?
can you not be overstaying?
can he not be overstaying?
can we not be overstaying?
can you not be overstaying?
can they not be overstaying? 	can I not have overstayed?
can you not have overstayed?
can he not have overstayed?
can we not have overstayed?
can you not have overstayed?
can they not have overstayed? 	can I not have been overstaying?
can you not have been overstaying?
can he not have been overstaying?
can we not have been overstaying?
can you not have been overstaying?
can they not have been overstaying?