English verb conjugation
MAY CALL

Regular verb: call - called - called

Affirmation

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