25 (b) If the office of the President becomes vacant when the Pyidaungsu Hluttaw is in session, the Acting President shall promptly intimate the Head of the Pyidaungsu Hluttaw to fill the vacancy within seven days. (c) On receipt of the intimation from the Acting President, the Head of the Pyidaungsu Hluttaw shall proceed to elect a Vice-President by the group of Hluttaw representatives concerned that initially elected the Vice-President who subsequently got elected President, the office now being vacant. (d) After the group of Hluttaw representatives concerned has elected a VicePresident, the Electoral College comprising all the Pyidaungsu Hluttaw representatives shall elect the President from among the three VicePresidents. (e) If the office of the President becomes vacant when the Pyidaungsu Hluttaw is not in session, the Head of the Pyidaungsu Hluttaw shall summon the Pyidaungsu Hluttaw within 21 days from the day of receipt of the intimation from the Acting President and proceed to hold election to fill the vacant office of the President in accord with the above procedure. (f) If the office of a Vice-President becomes vacant before the expiry of the term by reason of his resignation, death, permanent disability or any other cause when the Pyidaungsu Hluttaw is in session, the President shall promptly intimate the Head of the Pyidaungsu Hluttaw to elect a Vice-President within seven days by the group of Hluttaw representatives concerned that elected the said Vice-President.