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