can reharden
Regular verb: reharden - rehardened- rehardened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can reharden
you can reharden
he can reharden
we can reharden
you can reharden
they can reharden 	I can be rehardening
you can be rehardening
he can be rehardening
we can be rehardening
you can be rehardening
they can be rehardening	I can have rehardened
you can have rehardened
he can have rehardened
we can have rehardened
you can have rehardened
they can have rehardened	I can have been rehardening
you can have been rehardening
he can have been rehardening
we can have been rehardening
you can have been rehardening
they can have been rehardening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot reharden
you cannot reharden
he cannot reharden
we cannot reharden
you cannot reharden
they cannot reharden 	I cannot be rehardening
you cannot be rehardening
he cannot be rehardening
we cannot be rehardening
you cannot be rehardening
they cannot be rehardening	I cannot have rehardened
you cannot have rehardened
he cannot have rehardened
we cannot have rehardened
you cannot have rehardened
they cannot have rehardened	I cannot have been rehardening
you cannot have been rehardening
he cannot have been rehardening
we cannot have been rehardening
you cannot have been rehardening
they cannot have been rehardening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I reharden?
can you reharden?
can he reharden?
can we reharden?
can you reharden?
can they reharden? 	can I be rehardening?
can you be rehardening?
can he be rehardening?
can we be rehardening?
can you be rehardening?
can they be rehardening? 	can I have rehardened?
can you have rehardened?
can he have rehardened?
can we have rehardened?
can you have rehardened?
can they have rehardened? 	can I have been rehardening?
can you have been rehardening?
can he have been rehardening?
can we have been rehardening?
can you have been rehardening?
can they have been rehardening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not reharden?
can you not reharden?
can he not reharden?
can we not reharden?
can you not reharden?
can they not reharden? 	can I not be rehardening?
can you not be rehardening?
can he not be rehardening?
can we not be rehardening?
can you not be rehardening?
can they not be rehardening? 	can I not have rehardened?
can you not have rehardened?
can he not have rehardened?
can we not have rehardened?
can you not have rehardened?
can they not have rehardened? 	can I not have been rehardening?
can you not have been rehardening?
can he not have been rehardening?
can we not have been rehardening?
can you not have been rehardening?
can they not have been rehardening?