(1) Every other application for the conversion of a possessory title into an absolute title in the case of property purchased under the Land Purchase Acts shall show the title to the property that existed prior to such purchase.
(2) Where the Authority so permits, the title to the tenancy- (a) may commence with a disposition made not less than 15 years prior to the date of the application; or
(b) may be deduced for a period of not less than 30 years prior to the application, whether based on possession or otherwise.
(3) The application shall be made by affidavit in Form 11 or 12, with such modifications as the case may require, according as the applicant does or does not rely on legal opinion.