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