I may call you may call she may call we may call you may call they may call
V-ing form
I may be calling you may be calling she may be calling we may be calling you may be calling they may be calling
Perfect
I may have called you may have called she 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 she 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 she 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 she 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 she 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 she 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 she call? may we call? may you call? may they call?
V-ing form
may I be calling? may you be calling? may she be calling? may we be calling? may you be calling? may they be calling?
Perfect
may I have called? may you have called? may she 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 she 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 she 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 she 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 she 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 she have been calling? mayn't we have been calling? mayn't you have been calling? mayn't they have been calling?