In the Sixth Schedule to the Constitution , in paragraph 20,—
         (a) after sub-paragraph (2), the following sub-paragraph shall be inserted namely:—
             "(2A) The Mizo District shall comprise the area which at the commencement of this Constitution was known as the Lushai Hills District.";
         (b) in sub-paragraph (3), after the words "United Khasi Jaintia Hills District" the words "and the Mizo District" shall be inserted; and
         (c) in Part A of the table, for the words "The Lushai Hills District", the words "The Mizo District" shall be substituted.