Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I may attend sth you may attend sth he may attend sth we may attend sth you may attend sth they may attend sth
V-ing form
I may be attend sthing you may be attend sthing he may be attend sthing we may be attend sthing you may be attend sthing they may be attend sthing
Perfect
I may have attend sthed you may have attend sthed he may have attend sthed we may have attend sthed you may have attend sthed they may have attend sthed
V-ing perfect
I may have been attend sthing you may have been attend sthing he may have been attend sthing we may have been attend sthing you may have been attend sthing they may have been attend sthing
Negation
Simple form
I mayn't attend sth you mayn't attend sth he mayn't attend sth we mayn't attend sth you mayn't attend sth they mayn't attend sth
V-ing form
I mayn't be attend sthing you mayn't be attend sthing he mayn't be attend sthing we mayn't be attend sthing you mayn't be attend sthing they mayn't be attend sthing
Perfect
I mayn't have attend sthed you mayn't have attend sthed he mayn't have attend sthed we mayn't have attend sthed you mayn't have attend sthed they mayn't have attend sthed
V-ing perfect
I mayn't have been attend sthing you mayn't have been attend sthing he mayn't have been attend sthing we mayn't have been attend sthing you mayn't have been attend sthing they mayn't have been attend sthing
Interrogative form
Simple form
may I attend sth? may you attend sth? may he attend sth? may we attend sth? may you attend sth? may they attend sth?
V-ing form
may I be attend sthing? may you be attend sthing? may he be attend sthing? may we be attend sthing? may you be attend sthing? may they be attend sthing?
Perfect
may I have attend sthed? may you have attend sthed? may he have attend sthed? may we have attend sthed? may you have attend sthed? may they have attend sthed?
V-ing perfect
may I have been attend sthing? may you have been attend sthing? may he have been attend sthing? may we have been attend sthing? may you have been attend sthing? may they have been attend sthing?
Interro-negative form
Simple form
mayn't I attend sth? mayn't you attend sth? mayn't he attend sth? mayn't we attend sth? mayn't you attend sth? mayn't they attend sth?
V-ing form
mayn't I be attend sthing? mayn't you be attend sthing? mayn't he be attend sthing? mayn't we be attend sthing? mayn't you be attend sthing? mayn't they be attend sthing?
Perfect
mayn't I have attend sthed? mayn't you have attend sthed? mayn't he have attend sthed? mayn't we have attend sthed? mayn't you have attend sthed? mayn't they have attend sthed?
V-ing perfect
mayn't I have been attend sthing? mayn't you have been attend sthing? mayn't he have been attend sthing? mayn't we have been attend sthing? mayn't you have been attend sthing? mayn't they have been attend sthing?