For the purposes of paragraphs 6 and 8, the date on which the deputy Presiding Officer ceased to hold office shall be— i (a) n the case where the deputy Presiding Officer resigns, the date on which the resignation takes effect; i (b) n the case where the deputy Presiding Officer is removed from office by resolution of the Parliament, the date on which the deputy Presiding Officer is so removed; or i (c) n the case where the deputy Presiding Officer ceases to be a member of the Parliament, the date on which a vacancy is to be treated as occurring for the purposes of section 9 (constituency vacancies) or 10 (regional vacancies) in accordance with Rule 1.5. 10A.