English verb conjugation
MAY COSTUME

Regular verb: costume - costumed - costumed

Affirmation

Simple form	V-ing form
I may costume you may costume he may costume we may costume you may costume they may costume	I may be costuming you may be costuming he may be costuming we may be costuming you may be costuming they may be costuming
Perfect	V-ing perfect
I may have costumed you may have costumed he may have costumed we may have costumed you may have costumed they may have costumed	I may have been costuming you may have been costuming he may have been costuming we may have been costuming you may have been costuming they may have been costuming

Negation

Simple form	V-ing form
I mayn't costume you mayn't costume he mayn't costume we mayn't costume you mayn't costume they mayn't costume	I mayn't be costuming you mayn't be costuming he mayn't be costuming we mayn't be costuming you mayn't be costuming they mayn't be costuming
Perfect	V-ing perfect
I mayn't have costumed you mayn't have costumed he mayn't have costumed we mayn't have costumed you mayn't have costumed they mayn't have costumed	I mayn't have been costuming you mayn't have been costuming he mayn't have been costuming we mayn't have been costuming you mayn't have been costuming they mayn't have been costuming

Interrogative form

Simple form	V-ing form
may I costume? may you costume? may he costume? may we costume? may you costume? may they costume?	may I be costuming? may you be costuming? may he be costuming? may we be costuming? may you be costuming? may they be costuming?
Perfect	V-ing perfect
may I have costumed? may you have costumed? may he have costumed? may we have costumed? may you have costumed? may they have costumed?	may I have been costuming? may you have been costuming? may he have been costuming? may we have been costuming? may you have been costuming? may they have been costuming?

Interro-negative form

Simple form	V-ing form
mayn't I costume? mayn't you costume? mayn't he costume? mayn't we costume? mayn't you costume? mayn't they costume?	mayn't I be costuming? mayn't you be costuming? mayn't he be costuming? mayn't we be costuming? mayn't you be costuming? mayn't they be costuming?
Perfect	V-ing perfect
mayn't I have costumed? mayn't you have costumed? mayn't he have costumed? mayn't we have costumed? mayn't you have costumed? mayn't they have costumed?	mayn't I have been costuming? mayn't you have been costuming? mayn't he have been costuming? mayn't we have been costuming? mayn't you have been costuming? mayn't they have been costuming?