English verb conjugation
MAY EXCUSE

Regular verb: excuse - excused - excused

Affirmation

Simple form	V-ing form
I may excuse you may excuse she may excuse we may excuse you may excuse they may excuse	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	V-ing 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	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	V-ing form
I mayn't excuse you mayn't excuse she mayn't excuse we mayn't excuse you mayn't excuse they mayn't excuse	I mayn't be excusing you mayn't be excusing she mayn't be excusing we mayn't be excusing you mayn't be excusing they mayn't be excusing
Perfect	V-ing perfect
I mayn't have excused you mayn't have excused she mayn't have excused we mayn't have excused you mayn't have excused they mayn't have excused	I mayn't have been excusing you mayn't have been excusing she mayn't have been excusing we mayn't have been excusing you mayn't have been excusing they mayn't have been excusing

Interrogative form

Simple form	V-ing form
may I excuse? may you excuse? may she excuse? may we excuse? may you excuse? may they excuse?	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	V-ing 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?	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	V-ing form
mayn't I excuse? mayn't you excuse? mayn't she excuse? mayn't we excuse? mayn't you excuse? mayn't they excuse?	mayn't I be excusing? mayn't you be excusing? mayn't she be excusing? mayn't we be excusing? mayn't you be excusing? mayn't they be excusing?
Perfect	V-ing perfect
mayn't I have excused? mayn't you have excused? mayn't she have excused? mayn't we have excused? mayn't you have excused? mayn't they have excused?	mayn't I have been excusing? mayn't you have been excusing? mayn't she have been excusing? mayn't we have been excusing? mayn't you have been excusing? mayn't they have been excusing?