I may excuse you may excuse she may excuse we may excuse you may excuse they may excuse
V-ing form
I may be excusing you may be excusing she may be excusing we may be excusing you may be excusing they may be excusing
Perfect
I may have excused you may have excused she may have excused we may have excused you may have excused they may have excused
V-ing perfect
I may have been excusing you may have been excusing she may have been excusing we may have been excusing you may have been excusing they may have been excusing
Negation
Simple form
I may not excuse you may not excuse she may not excuse we may not excuse you may not excuse they may not excuse
V-ing form
I may not be excusing you may not be excusing she may not be excusing we may not be excusing you may not be excusing they may not be excusing
Perfect
I may not have excused you may not have excused she may not have excused we may not have excused you may not have excused they may not have excused
V-ing perfect
I may not have been excusing you may not have been excusing she may not have been excusing we may not have been excusing you may not have been excusing they may not have been excusing
Interrogative form
Simple form
may I excuse? may you excuse? may she excuse? may we excuse? may you excuse? may they excuse?
V-ing form
may I be excusing? may you be excusing? may she be excusing? may we be excusing? may you be excusing? may they be excusing?
Perfect
may I have excused? may you have excused? may she have excused? may we have excused? may you have excused? may they have excused?
V-ing perfect
may I have been excusing? may you have been excusing? may she have been excusing? may we have been excusing? may you have been excusing? may they have been excusing?
Interro-negative form
Simple form
may I not excuse? may you not excuse? may she not excuse? may we not excuse? may you not excuse? may they not excuse?
V-ing form
may I not be excusing? may you not be excusing? may she not be excusing? may we not be excusing? may you not be excusing? may they not be excusing?
Perfect
may I not have excused? may you not have excused? may she not have excused? may we not have excused? may you not have excused? may they not have excused?
V-ing perfect
may I not have been excusing? may you not have been excusing? may she not have been excusing? may we not have been excusing? may you not have been excusing? may they not have been excusing?