20. (1) The wards shall be delimited having regard to territorial unity and, so far as practicable, to distribution of population and administrative convenience. (2) A delimitation officer may, for the purpose of delimiting the wards, make such enquiries and examine such records as he may deem necessary and consider such representations as may be received by him, and shall publish at his office and at the office of the Union Parishad and at such other place or places as he considers necessary a preliminary list of wards specifying the areas proposed to be included in each such ward together with a notice inviting objections or suggestions within fifteen days from the date of publication of the notice. (3) The objection or suggestion, if any, received under sub section (2), shall be forwarded to the ¹[Thana Nirbahi Officer] who, after making such enquiries as he considers necessary, shall give his decision within a period not exceeding fifteen days from the date of receipt of the objections or suggestions from the delimitation officer. (4) The delimitation officer shall make such amendments, alterations or modifications in the preliminary list published under sub section (2) as may be required by any decision on any objection or suggestion given by the ²[Thana Nirbahi Officer] under sub-section (3) and may also make such other amendments, alterations or modifications in the said list as may be necessary for correcting any error or omission. (5) After making amendments, alterations or modifications, if any, under sub section (4), the delimitation officer shall publish at his office and at the office of the Union Parishad and at such other place or places as he considers necessary the final list of wards, specifying the areas included in such ward and shall forward attested copies thereof to the ³[Thana Nirbahi Officer] who shall publish the list of wards in the official Gazette.