Since ancient linguistics, the studies of Indo-European word order work with the conception of universal natural word order (ordo naturalis) – an order of the verb-dependent constituents in the linear organization of a clause. The description of the natural word order is usually based on occasional (and in some degree random) observations of clauses in a certain language. In Czech linguistics, the idea of the natural word order was formulated in a more precise way as the hypothesis of the systemic ordering (Sgall, Hajicova and Buraňova, 1980). According to the authors, the contextually non-bound participants and adverbials are ordered as follows (o. c., page 77):