may preregister
Regular verb: preregister - preregistered- preregistered

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

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't preregister
you mayn't preregister
he mayn't preregister
we mayn't preregister
you mayn't preregister
they mayn't preregister 	I mayn't be preregistering
you mayn't be preregistering
he mayn't be preregistering
we mayn't be preregistering
you mayn't be preregistering
they mayn't be preregistering	I mayn't have preregistered
you mayn't have preregistered
he mayn't have preregistered
we mayn't have preregistered
you mayn't have preregistered
they mayn't have preregistered	I mayn't have been preregistering
you mayn't have been preregistering
he mayn't have been preregistering
we mayn't have been preregistering
you mayn't have been preregistering
they mayn't have been preregistering	

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

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I preregister?
mayn't you preregister?
mayn't he preregister?
mayn't we preregister?
mayn't you preregister?
mayn't they preregister? 	mayn't I be preregistering?
mayn't you be preregistering?
mayn't he be preregistering?
mayn't we be preregistering?
mayn't you be preregistering?
mayn't they be preregistering? 	mayn't I have preregistered?
mayn't you have preregistered?
mayn't he have preregistered?
mayn't we have preregistered?
mayn't you have preregistered?
mayn't they have preregistered? 	mayn't I have been preregistering?
mayn't you have been preregistering?
mayn't he have been preregistering?
mayn't we have been preregistering?
mayn't you have been preregistering?
mayn't they have been preregistering?