Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I may speak. talk you may speak. talk she may speak. talk we may speak. talk you may speak. talk they may speak. talk
V-ing form
I may be speak. talking you may be speak. talking she may be speak. talking we may be speak. talking you may be speak. talking they may be speak. talking
Perfect
I may have speak. talked you may have speak. talked she may have speak. talked we may have speak. talked you may have speak. talked they may have speak. talked
V-ing perfect
I may have been speak. talking you may have been speak. talking she may have been speak. talking we may have been speak. talking you may have been speak. talking they may have been speak. talking
Negation
Simple form
I mayn't speak. talk you mayn't speak. talk she mayn't speak. talk we mayn't speak. talk you mayn't speak. talk they mayn't speak. talk
V-ing form
I mayn't be speak. talking you mayn't be speak. talking she mayn't be speak. talking we mayn't be speak. talking you mayn't be speak. talking they mayn't be speak. talking
Perfect
I mayn't have speak. talked you mayn't have speak. talked she mayn't have speak. talked we mayn't have speak. talked you mayn't have speak. talked they mayn't have speak. talked
V-ing perfect
I mayn't have been speak. talking you mayn't have been speak. talking she mayn't have been speak. talking we mayn't have been speak. talking you mayn't have been speak. talking they mayn't have been speak. talking
Interrogative form
Simple form
may I speak. talk? may you speak. talk? may she speak. talk? may we speak. talk? may you speak. talk? may they speak. talk?
V-ing form
may I be speak. talking? may you be speak. talking? may she be speak. talking? may we be speak. talking? may you be speak. talking? may they be speak. talking?
Perfect
may I have speak. talked? may you have speak. talked? may she have speak. talked? may we have speak. talked? may you have speak. talked? may they have speak. talked?
V-ing perfect
may I have been speak. talking? may you have been speak. talking? may she have been speak. talking? may we have been speak. talking? may you have been speak. talking? may they have been speak. talking?
Interro-negative form
Simple form
mayn't I speak. talk? mayn't you speak. talk? mayn't she speak. talk? mayn't we speak. talk? mayn't you speak. talk? mayn't they speak. talk?
V-ing form
mayn't I be speak. talking? mayn't you be speak. talking? mayn't she be speak. talking? mayn't we be speak. talking? mayn't you be speak. talking? mayn't they be speak. talking?
Perfect
mayn't I have speak. talked? mayn't you have speak. talked? mayn't she have speak. talked? mayn't we have speak. talked? mayn't you have speak. talked? mayn't they have speak. talked?
V-ing perfect
mayn't I have been speak. talking? mayn't you have been speak. talking? mayn't she have been speak. talking? mayn't we have been speak. talking? mayn't you have been speak. talking? mayn't they have been speak. talking?