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