may predate
Regular verb: predate - predated- predated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may predate
you may predate
she may predate
we may predate
you may predate
they may predate 	I may be predating
you may be predating
she may be predating
we may be predating
you may be predating
they may be predating	I may have predated
you may have predated
she may have predated
we may have predated
you may have predated
they may have predated	I may have been predating
you may have been predating
she may have been predating
we may have been predating
you may have been predating
they may have been predating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't predate
you mayn't predate
she mayn't predate
we mayn't predate
you mayn't predate
they mayn't predate 	I mayn't be predating
you mayn't be predating
she mayn't be predating
we mayn't be predating
you mayn't be predating
they mayn't be predating	I mayn't have predated
you mayn't have predated
she mayn't have predated
we mayn't have predated
you mayn't have predated
they mayn't have predated	I mayn't have been predating
you mayn't have been predating
she mayn't have been predating
we mayn't have been predating
you mayn't have been predating
they mayn't have been predating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I predate?
may you predate?
may she predate?
may we predate?
may you predate?
may they predate? 	may I be predating?
may you be predating?
may she be predating?
may we be predating?
may you be predating?
may they be predating? 	may I have predated?
may you have predated?
may she have predated?
may we have predated?
may you have predated?
may they have predated? 	may I have been predating?
may you have been predating?
may she have been predating?
may we have been predating?
may you have been predating?
may they have been predating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I predate?
mayn't you predate?
mayn't she predate?
mayn't we predate?
mayn't you predate?
mayn't they predate? 	mayn't I be predating?
mayn't you be predating?
mayn't she be predating?
mayn't we be predating?
mayn't you be predating?
mayn't they be predating? 	mayn't I have predated?
mayn't you have predated?
mayn't she have predated?
mayn't we have predated?
mayn't you have predated?
mayn't they have predated? 	mayn't I have been predating?
mayn't you have been predating?
mayn't she have been predating?
mayn't we have been predating?
mayn't you have been predating?
mayn't they have been predating?