English verb conjugation
MAY BELIEVE

Regular verb: believe - believed - believed

Affirmation

Simple form	V-ing form
I may believe you may believe she may believe we may believe you may believe they may believe	I may be believing you may be believing she may be believing we may be believing you may be believing they may be believing
Perfect	V-ing perfect
I may have believed you may have believed she may have believed we may have believed you may have believed they may have believed	I may have been believing you may have been believing she may have been believing we may have been believing you may have been believing they may have been believing

Negation

Simple form	V-ing form
I mayn't believe you mayn't believe she mayn't believe we mayn't believe you mayn't believe they mayn't believe	I mayn't be believing you mayn't be believing she mayn't be believing we mayn't be believing you mayn't be believing they mayn't be believing
Perfect	V-ing perfect
I mayn't have believed you mayn't have believed she mayn't have believed we mayn't have believed you mayn't have believed they mayn't have believed	I mayn't have been believing you mayn't have been believing she mayn't have been believing we mayn't have been believing you mayn't have been believing they mayn't have been believing

Interrogative form

Simple form	V-ing form
may I believe? may you believe? may she believe? may we believe? may you believe? may they believe?	may I be believing? may you be believing? may she be believing? may we be believing? may you be believing? may they be believing?
Perfect	V-ing perfect
may I have believed? may you have believed? may she have believed? may we have believed? may you have believed? may they have believed?	may I have been believing? may you have been believing? may she have been believing? may we have been believing? may you have been believing? may they have been believing?

Interro-negative form

Simple form	V-ing form
mayn't I believe? mayn't you believe? mayn't she believe? mayn't we believe? mayn't you believe? mayn't they believe?	mayn't I be believing? mayn't you be believing? mayn't she be believing? mayn't we be believing? mayn't you be believing? mayn't they be believing?
Perfect	V-ing perfect
mayn't I have believed? mayn't you have believed? mayn't she have believed? mayn't we have believed? mayn't you have believed? mayn't they have believed?	mayn't I have been believing? mayn't you have been believing? mayn't she have been believing? mayn't we have been believing? mayn't you have been believing? mayn't they have been believing?