may prebook
Regular verb: prebook - prebooked- prebooked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may prebook
you may prebook
she may prebook
we may prebook
you may prebook
they may prebook 	I may be prebooking
you may be prebooking
she may be prebooking
we may be prebooking
you may be prebooking
they may be prebooking	I may have prebooked
you may have prebooked
she may have prebooked
we may have prebooked
you may have prebooked
they may have prebooked	I may have been prebooking
you may have been prebooking
she may have been prebooking
we may have been prebooking
you may have been prebooking
they may have been prebooking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't prebook
you mayn't prebook
she mayn't prebook
we mayn't prebook
you mayn't prebook
they mayn't prebook 	I mayn't be prebooking
you mayn't be prebooking
she mayn't be prebooking
we mayn't be prebooking
you mayn't be prebooking
they mayn't be prebooking	I mayn't have prebooked
you mayn't have prebooked
she mayn't have prebooked
we mayn't have prebooked
you mayn't have prebooked
they mayn't have prebooked	I mayn't have been prebooking
you mayn't have been prebooking
she mayn't have been prebooking
we mayn't have been prebooking
you mayn't have been prebooking
they mayn't have been prebooking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I prebook?
may you prebook?
may she prebook?
may we prebook?
may you prebook?
may they prebook? 	may I be prebooking?
may you be prebooking?
may she be prebooking?
may we be prebooking?
may you be prebooking?
may they be prebooking? 	may I have prebooked?
may you have prebooked?
may she have prebooked?
may we have prebooked?
may you have prebooked?
may they have prebooked? 	may I have been prebooking?
may you have been prebooking?
may she have been prebooking?
may we have been prebooking?
may you have been prebooking?
may they have been prebooking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I prebook?
mayn't you prebook?
mayn't she prebook?
mayn't we prebook?
mayn't you prebook?
mayn't they prebook? 	mayn't I be prebooking?
mayn't you be prebooking?
mayn't she be prebooking?
mayn't we be prebooking?
mayn't you be prebooking?
mayn't they be prebooking? 	mayn't I have prebooked?
mayn't you have prebooked?
mayn't she have prebooked?
mayn't we have prebooked?
mayn't you have prebooked?
mayn't they have prebooked? 	mayn't I have been prebooking?
mayn't you have been prebooking?
mayn't she have been prebooking?
mayn't we have been prebooking?
mayn't you have been prebooking?
mayn't they have been prebooking?