I may ulcerate you may ulcerate he may ulcerate we may ulcerate you may ulcerate they may ulcerate
V-ing form
I may be ulcerating you may be ulcerating he may be ulcerating we may be ulcerating you may be ulcerating they may be ulcerating
Perfect
I may have ulcerated you may have ulcerated he may have ulcerated we may have ulcerated you may have ulcerated they may have ulcerated
V-ing perfect
I may have been ulcerating you may have been ulcerating he may have been ulcerating we may have been ulcerating you may have been ulcerating they may have been ulcerating
Negation
Simple form
I may not ulcerate you may not ulcerate he may not ulcerate we may not ulcerate you may not ulcerate they may not ulcerate
V-ing form
I may not be ulcerating you may not be ulcerating he may not be ulcerating we may not be ulcerating you may not be ulcerating they may not be ulcerating
Perfect
I may not have ulcerated you may not have ulcerated he may not have ulcerated we may not have ulcerated you may not have ulcerated they may not have ulcerated
V-ing perfect
I may not have been ulcerating you may not have been ulcerating he may not have been ulcerating we may not have been ulcerating you may not have been ulcerating they may not have been ulcerating
Interrogative form
Simple form
may I ulcerate? may you ulcerate? may he ulcerate? may we ulcerate? may you ulcerate? may they ulcerate?
V-ing form
may I be ulcerating? may you be ulcerating? may he be ulcerating? may we be ulcerating? may you be ulcerating? may they be ulcerating?
Perfect
may I have ulcerated? may you have ulcerated? may he have ulcerated? may we have ulcerated? may you have ulcerated? may they have ulcerated?
V-ing perfect
may I have been ulcerating? may you have been ulcerating? may he have been ulcerating? may we have been ulcerating? may you have been ulcerating? may they have been ulcerating?
Interro-negative form
Simple form
may I not ulcerate? may you not ulcerate? may he not ulcerate? may we not ulcerate? may you not ulcerate? may they not ulcerate?
V-ing form
may I not be ulcerating? may you not be ulcerating? may he not be ulcerating? may we not be ulcerating? may you not be ulcerating? may they not be ulcerating?
Perfect
may I not have ulcerated? may you not have ulcerated? may he not have ulcerated? may we not have ulcerated? may you not have ulcerated? may they not have ulcerated?
V-ing perfect
may I not have been ulcerating? may you not have been ulcerating? may he not have been ulcerating? may we not have been ulcerating? may you not have been ulcerating? may they not have been ulcerating?