I may breakfast you may breakfast he may breakfast we may breakfast you may breakfast they may breakfast
V-ing form
I may be breakfasting you may be breakfasting he may be breakfasting we may be breakfasting you may be breakfasting they may be breakfasting
Perfect
I may have breakfasted you may have breakfasted he may have breakfasted we may have breakfasted you may have breakfasted they may have breakfasted
V-ing perfect
I may have been breakfasting you may have been breakfasting he may have been breakfasting we may have been breakfasting you may have been breakfasting they may have been breakfasting
Negation
Simple form
I mayn't breakfast you mayn't breakfast he mayn't breakfast we mayn't breakfast you mayn't breakfast they mayn't breakfast
V-ing form
I mayn't be breakfasting you mayn't be breakfasting he mayn't be breakfasting we mayn't be breakfasting you mayn't be breakfasting they mayn't be breakfasting
Perfect
I mayn't have breakfasted you mayn't have breakfasted he mayn't have breakfasted we mayn't have breakfasted you mayn't have breakfasted they mayn't have breakfasted
V-ing perfect
I mayn't have been breakfasting you mayn't have been breakfasting he mayn't have been breakfasting we mayn't have been breakfasting you mayn't have been breakfasting they mayn't have been breakfasting
Interrogative form
Simple form
may I breakfast? may you breakfast? may he breakfast? may we breakfast? may you breakfast? may they breakfast?
V-ing form
may I be breakfasting? may you be breakfasting? may he be breakfasting? may we be breakfasting? may you be breakfasting? may they be breakfasting?
Perfect
may I have breakfasted? may you have breakfasted? may he have breakfasted? may we have breakfasted? may you have breakfasted? may they have breakfasted?
V-ing perfect
may I have been breakfasting? may you have been breakfasting? may he have been breakfasting? may we have been breakfasting? may you have been breakfasting? may they have been breakfasting?
Interro-negative form
Simple form
mayn't I breakfast? mayn't you breakfast? mayn't he breakfast? mayn't we breakfast? mayn't you breakfast? mayn't they breakfast?
V-ing form
mayn't I be breakfasting? mayn't you be breakfasting? mayn't he be breakfasting? mayn't we be breakfasting? mayn't you be breakfasting? mayn't they be breakfasting?
Perfect
mayn't I have breakfasted? mayn't you have breakfasted? mayn't he have breakfasted? mayn't we have breakfasted? mayn't you have breakfasted? mayn't they have breakfasted?
V-ing perfect
mayn't I have been breakfasting? mayn't you have been breakfasting? mayn't he have been breakfasting? mayn't we have been breakfasting? mayn't you have been breakfasting? mayn't they have been breakfasting?