Constitution of Kenya, 2010 203 [Subsidiary] into writing by the Court. Documents to be annexed to affidavit or petition. 11. (1) The petition filed under these rules may be supported by an affidavit. (2) If a party wishes to rely on any document, the document shall be annexed to the supporting affidavit or the petition where there is no supporting affidavit. Registrar to assist in filing of petitions. 12. The Registrar shall cause a prescribed form to be available in the Registry to assist petitioners who bring oral applications to have them reduced in writing. Petition filed under certificate of urgency. 13. A petition filed under certificate of urgency may be placed before a Judge for appropriate orders or directions. Service of petition. 14. (1) The petitioner shall serve the respondent with the petition, documents and relevant annexures within 15 days of filing or such time as the court may direct. (2) Proof of service shall be the affidavit of service set out in Form B in the Schedule with such variations as may be necessary. Reply to a petition. 15. (1) The Attorney-General or any other State organ shall within fourteen days of service of a petition respond by way of a replying affidavit and if any document is relied upon, it shall be annexed to the replying affidavit. (2) (a) A respondent not in the category of sub rule (1) shall within seven days file a memorandum of appearance and either a— (i) replying affidavit; or (ii) statement setting out the grounds relied upon to oppose the petition. (b) After filing either of the documents referred to in sub rule (2) (a), a respondent may respond by way of a replying affidavit or provide any other written document as a response to the petition within fourteen days. (3) The respondent may file a cross-petition which shall disclose the matter set out in rule 10(2).