5 nature of the system requires that a distinction be established between the time in which the initial petition is filed by the petitioner, and the preliminary inquiry (initial processing) which the Inter-American Commission carries out in response to the petition. 11 In the latter procedural stage, the admissibility is assessed of the relevant parts that are to be forwarded to the State, after a preliminary study of the admissibility requirements is carried out. That is, if the petition is not "manifestly unfounded," the Commission decides to pursue the matter and inform the State of that decision, which does not mean that the case is admissible for the purposes of Articles 46 or 47 of the American Convention. 20. The State, once the petition has been forwarded, must specify, if applicable, the domestic remedies that have not yet been exhausted, and show that these remedies were available and were adequate, appropriate and effective,12 which has been reiterated in the jurisprudence of the Inter-American Court. Once the petition has been forwarded to the State, the adversarial proceedings begins, and it is at that stage where the Inter-American Commission –always respecting the procedural fairness and adequate protection of the parties— is able to assess the merits of the petition and, if applicable, the admissibility or inadmissibility of the petition as provided in Articles 46 or 47 of the American Convention. Otherwise, upon receiving the petition, that is, before processing it or beginning the initial assessment of the petition, the Commission would be required to verify with complete certainty whether in each situation the domestic remedies have been exhausted and assess the laws of each State to determine whether there might be other possible remedies to be exhausted and whether they are effective, which the Inter-American Court has consistently held, is a responsibility of the State. 13 In this regard, the Inter-American Court has established that:14 First, the Court has pointed out that the matter of the failure to exhaust remedies is one of pure admissibility and that the State which alleges it must express which domestic remedies should be exhausted, as well as prove the effectiveness thereof. Second, for the objection of failure to exhaust the domestic remedies to be held timely, it should be filed at the admissibility stage of the proceeding before the Commission, that is, before any consideration of the merits of the case; otherwise, the State is assumed to have waived constructively its right to resort to it. Third, the respondent State may waive, either expressly or tacitly, the right to raise an objection for failure to exhaust the domestic remedies. 15 (Underlining added) 11 Articles 26 to 29 of the Rules of Procedure of the Inter-American Commission on Human Rights and the Rules of Procedure in force when the admissibility of the petition filed by Mr. Liakat Ali Alibux on March 9, 2007 was decided upon. 12 Cf. Case of Velásquez Rodríguez V. Honduras. Preliminary Objections. Judgment of June 26, 1987. Series C No. 1, para. 91; and Case of Vera Vera et al. V. Ecuador. Preliminary Objection, Merits, Reparations and Costs. Judgment of May 19, 2011. Series C no. 226, para. 13. Moreover, see para. 20 of the Judgment. 13 Cf. para. 16 of the Judgment. Moreover, see Case of Velásquez Rodríguez V. Honduras. Preliminary Objections. Judgment of June 26, 1987. Series C No. 1, para. 88; and Case of Mémoli V. Argentina. Preliminary Objections, Merits, Reparations and Costs. Judgment of August 22, 2013. Series C No 265, para. 47. 14 Cf. para. 16 of the Judgment. Moreover, see Case of Almonacid Arellano et al. V. Chile. Preliminary Objections, Merits, Reparations and Costs. Judgment of September 26, 2006. Series C No. 154, para. 64. 15 Cf. Case of Ximenes-Lopes v. Brazil. Preliminary Objections, supra note 3, para. 5; Case of the Moiwana Community v. Suriname, supra note 3, para. 49; and Case of the Serrano-Cruz Sisters v. El Salvador. Preliminary Observations, supra note 2, para. 135.