I may belch you may belch he may belch we may belch you may belch they may belch
V-ing form
I may be belching you may be belching he may be belching we may be belching you may be belching they may be belching
Perfect
I may have belched you may have belched he may have belched we may have belched you may have belched they may have belched
V-ing perfect
I may have been belching you may have been belching he may have been belching we may have been belching you may have been belching they may have been belching
Negation
Simple form
I may not belch you may not belch he may not belch we may not belch you may not belch they may not belch
V-ing form
I may not be belching you may not be belching he may not be belching we may not be belching you may not be belching they may not be belching
Perfect
I may not have belched you may not have belched he may not have belched we may not have belched you may not have belched they may not have belched
V-ing perfect
I may not have been belching you may not have been belching he may not have been belching we may not have been belching you may not have been belching they may not have been belching
Interrogative form
Simple form
may I belch? may you belch? may he belch? may we belch? may you belch? may they belch?
V-ing form
may I be belching? may you be belching? may he be belching? may we be belching? may you be belching? may they be belching?
Perfect
may I have belched? may you have belched? may he have belched? may we have belched? may you have belched? may they have belched?
V-ing perfect
may I have been belching? may you have been belching? may he have been belching? may we have been belching? may you have been belching? may they have been belching?
Interro-negative form
Simple form
may I not belch? may you not belch? may he not belch? may we not belch? may you not belch? may they not belch?
V-ing form
may I not be belching? may you not be belching? may he not be belching? may we not be belching? may you not be belching? may they not be belching?
Perfect
may I not have belched? may you not have belched? may he not have belched? may we not have belched? may you not have belched? may they not have belched?
V-ing perfect
may I not have been belching? may you not have been belching? may he not have been belching? may we not have been belching? may you not have been belching? may they not have been belching?