Method for transforming a supply stream (1) of flat articles (8) into an imbricated stream (2, 3, 4, 5) with a selectable article arrangement, the method comprising the steps of:
- conveying the flat articles (8) in the supply stream (1), each article individually held at an upper edge and in a conveying direction being oriented substantially transverse to the held edges,
- depositing the flat articles (8) from held conveyance selectively at a first depositing point (I) or at a second depositing point (II) with the held edges leading or trailing on to a conveying surface (13) to form an imbricated stream on the conveying surface (13),
- and conveying the flat articles in the imbricated stream away on the conveying surface (13),
- wherein the articles deposited at the first depositing point (I) or to be deposited at the first depositing point (I) are in addition rotated by 180° around the conveying direction.