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