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 may not call you may not call he may not call we may not call you may not call they may not call
V-ing form
I may not be calling you may not be calling he may not be calling we may not be calling you may not be calling they may not be calling
Perfect
I may not have called you may not have called he may not have called we may not have called you may not have called they may not have called
V-ing perfect
I may not have been calling you may not have been calling he may not have been calling we may not have been calling you may not have been calling they may not 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
may I not call? may you not call? may he not call? may we not call? may you not call? may they not call?
V-ing form
may I not be calling? may you not be calling? may he not be calling? may we not be calling? may you not be calling? may they not be calling?
Perfect
may I not have called? may you not have called? may he not have called? may we not have called? may you not have called? may they not have called?
V-ing perfect
may I not have been calling? may you not have been calling? may he not have been calling? may we not have been calling? may you not have been calling? may they not have been calling?