English verb conjugation
MAY ULCERATE

Regular verb: ulcerate - ulcerated - ulcerated

Affirmation

Simple form	V-ing form
I may ulcerate you may ulcerate she may ulcerate we may ulcerate you may ulcerate they may ulcerate	I may be ulcerating you may be ulcerating she may be ulcerating we may be ulcerating you may be ulcerating they may be ulcerating
Perfect	V-ing perfect
I may have ulcerated you may have ulcerated she may have ulcerated we may have ulcerated you may have ulcerated they may have ulcerated	I may have been ulcerating you may have been ulcerating she may have been ulcerating we may have been ulcerating you may have been ulcerating they may have been ulcerating

Negation

Simple form	V-ing form
I mayn't ulcerate you mayn't ulcerate she mayn't ulcerate we mayn't ulcerate you mayn't ulcerate they mayn't ulcerate	I mayn't be ulcerating you mayn't be ulcerating she mayn't be ulcerating we mayn't be ulcerating you mayn't be ulcerating they mayn't be ulcerating
Perfect	V-ing perfect
I mayn't have ulcerated you mayn't have ulcerated she mayn't have ulcerated we mayn't have ulcerated you mayn't have ulcerated they mayn't have ulcerated	I mayn't have been ulcerating you mayn't have been ulcerating she mayn't have been ulcerating we mayn't have been ulcerating you mayn't have been ulcerating they mayn't have been ulcerating

Interrogative form

Simple form	V-ing form
may I ulcerate? may you ulcerate? may she ulcerate? may we ulcerate? may you ulcerate? may they ulcerate?	may I be ulcerating? may you be ulcerating? may she be ulcerating? may we be ulcerating? may you be ulcerating? may they be ulcerating?
Perfect	V-ing perfect
may I have ulcerated? may you have ulcerated? may she have ulcerated? may we have ulcerated? may you have ulcerated? may they have ulcerated?	may I have been ulcerating? may you have been ulcerating? may she have been ulcerating? may we have been ulcerating? may you have been ulcerating? may they have been ulcerating?

Interro-negative form

Simple form	V-ing form
mayn't I ulcerate? mayn't you ulcerate? mayn't she ulcerate? mayn't we ulcerate? mayn't you ulcerate? mayn't they ulcerate?	mayn't I be ulcerating? mayn't you be ulcerating? mayn't she be ulcerating? mayn't we be ulcerating? mayn't you be ulcerating? mayn't they be ulcerating?
Perfect	V-ing perfect
mayn't I have ulcerated? mayn't you have ulcerated? mayn't she have ulcerated? mayn't we have ulcerated? mayn't you have ulcerated? mayn't they have ulcerated?	mayn't I have been ulcerating? mayn't you have been ulcerating? mayn't she have been ulcerating? mayn't we have been ulcerating? mayn't you have been ulcerating? mayn't they have been ulcerating?