I may stuff you may stuff she may stuff we may stuff you may stuff they may stuff
V-ing form
I may be stuffing you may be stuffing she may be stuffing we may be stuffing you may be stuffing they may be stuffing
Perfect
I may have stuffed you may have stuffed she may have stuffed we may have stuffed you may have stuffed they may have stuffed
V-ing perfect
I may have been stuffing you may have been stuffing she may have been stuffing we may have been stuffing you may have been stuffing they may have been stuffing
Negation
Simple form
I mayn't stuff you mayn't stuff she mayn't stuff we mayn't stuff you mayn't stuff they mayn't stuff
V-ing form
I mayn't be stuffing you mayn't be stuffing she mayn't be stuffing we mayn't be stuffing you mayn't be stuffing they mayn't be stuffing
Perfect
I mayn't have stuffed you mayn't have stuffed she mayn't have stuffed we mayn't have stuffed you mayn't have stuffed they mayn't have stuffed
V-ing perfect
I mayn't have been stuffing you mayn't have been stuffing she mayn't have been stuffing we mayn't have been stuffing you mayn't have been stuffing they mayn't have been stuffing
Interrogative form
Simple form
may I stuff? may you stuff? may she stuff? may we stuff? may you stuff? may they stuff?
V-ing form
may I be stuffing? may you be stuffing? may she be stuffing? may we be stuffing? may you be stuffing? may they be stuffing?
Perfect
may I have stuffed? may you have stuffed? may she have stuffed? may we have stuffed? may you have stuffed? may they have stuffed?
V-ing perfect
may I have been stuffing? may you have been stuffing? may she have been stuffing? may we have been stuffing? may you have been stuffing? may they have been stuffing?
Interro-negative form
Simple form
mayn't I stuff? mayn't you stuff? mayn't she stuff? mayn't we stuff? mayn't you stuff? mayn't they stuff?
V-ing form
mayn't I be stuffing? mayn't you be stuffing? mayn't she be stuffing? mayn't we be stuffing? mayn't you be stuffing? mayn't they be stuffing?
Perfect
mayn't I have stuffed? mayn't you have stuffed? mayn't she have stuffed? mayn't we have stuffed? mayn't you have stuffed? mayn't they have stuffed?
V-ing perfect
mayn't I have been stuffing? mayn't you have been stuffing? mayn't she have been stuffing? mayn't we have been stuffing? mayn't you have been stuffing? mayn't they have been stuffing?