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