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