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