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