may mark
Regular verb: mark - marked- marked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may mark
you may mark
she may mark
we may mark
you may mark
they may mark 	I may be marking
you may be marking
she may be marking
we may be marking
you may be marking
they may be marking	I may have marked
you may have marked
she may have marked
we may have marked
you may have marked
they may have marked	I may have been marking
you may have been marking
she may have been marking
we may have been marking
you may have been marking
they may have been marking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not mark
you may not mark
she may not mark
we may not mark
you may not mark
they may not mark 	I may not be marking
you may not be marking
she may not be marking
we may not be marking
you may not be marking
they may not be marking	I may not have marked
you may not have marked
she may not have marked
we may not have marked
you may not have marked
they may not have marked	I may not have been marking
you may not have been marking
she may not have been marking
we may not have been marking
you may not have been marking
they may not have been marking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I mark?
may you mark?
may she mark?
may we mark?
may you mark?
may they mark? 	may I be marking?
may you be marking?
may she be marking?
may we be marking?
may you be marking?
may they be marking? 	may I have marked?
may you have marked?
may she have marked?
may we have marked?
may you have marked?
may they have marked? 	may I have been marking?
may you have been marking?
may she have been marking?
may we have been marking?
may you have been marking?
may they have been marking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not mark?
may you not mark?
may she not mark?
may we not mark?
may you not mark?
may they not mark? 	may I not be marking?
may you not be marking?
may she not be marking?
may we not be marking?
may you not be marking?
may they not be marking? 	may I not have marked?
may you not have marked?
may she not have marked?
may we not have marked?
may you not have marked?
may they not have marked? 	may I not have been marking?
may you not have been marking?
may she not have been marking?
may we not have been marking?
may you not have been marking?
may they not have been marking?