can preregister
Regular verb: preregister - preregistered- preregistered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can preregister
you can preregister
she can preregister
we can preregister
you can preregister
they can preregister 	I can be preregistering
you can be preregistering
she can be preregistering
we can be preregistering
you can be preregistering
they can be preregistering	I can have preregistered
you can have preregistered
she can have preregistered
we can have preregistered
you can have preregistered
they can have preregistered	I can have been preregistering
you can have been preregistering
she can have been preregistering
we can have been preregistering
you can have been preregistering
they can have been preregistering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot preregister
you cannot preregister
she cannot preregister
we cannot preregister
you cannot preregister
they cannot preregister 	I cannot be preregistering
you cannot be preregistering
she cannot be preregistering
we cannot be preregistering
you cannot be preregistering
they cannot be preregistering	I cannot have preregistered
you cannot have preregistered
she cannot have preregistered
we cannot have preregistered
you cannot have preregistered
they cannot have preregistered	I cannot have been preregistering
you cannot have been preregistering
she cannot have been preregistering
we cannot have been preregistering
you cannot have been preregistering
they cannot have been preregistering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I preregister?
can you preregister?
can she preregister?
can we preregister?
can you preregister?
can they preregister? 	can I be preregistering?
can you be preregistering?
can she be preregistering?
can we be preregistering?
can you be preregistering?
can they be preregistering? 	can I have preregistered?
can you have preregistered?
can she have preregistered?
can we have preregistered?
can you have preregistered?
can they have preregistered? 	can I have been preregistering?
can you have been preregistering?
can she have been preregistering?
can we have been preregistering?
can you have been preregistering?
can they have been preregistering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not preregister?
can you not preregister?
can she not preregister?
can we not preregister?
can you not preregister?
can they not preregister? 	can I not be preregistering?
can you not be preregistering?
can she not be preregistering?
can we not be preregistering?
can you not be preregistering?
can they not be preregistering? 	can I not have preregistered?
can you not have preregistered?
can she not have preregistered?
can we not have preregistered?
can you not have preregistered?
can they not have preregistered? 	can I not have been preregistering?
can you not have been preregistering?
can she not have been preregistering?
can we not have been preregistering?
can you not have been preregistering?
can they not have been preregistering?