Provided that no two such lesser periods shall be aggregated for this purpose if the period between the expiration of the first and the commencement of the second is more than fourteen or thirty days, as the case may be. (7) For the purposes of subparagraph (3), a person shall be deemed to have been detained on the same grounds as those on which he was originally detained unless a tribunal established under subparagraph (4) has reported that, in its opinion, there appear prima facie to be new and reasonable grounds for the detention, but the giving of any such report shall be without prejudice to the provisions of subparagraphs (1) and (5). -9-