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