In the tragic senarius the divisions of the sense normally coincide with the main divisions of the metrical structure. Punctuation is most frequently found at the end of the line, or at the penthemimeral or hephthemimeral caesura. There are few traces of any desire to produce a persistent clash (as in the Vergilian hexameter) between verse structure and sentence structure. Thus at Med. 446–50 and 709–13 five consecutive lines, at Med. 364–71 eight consecutive lines, are more or less self-contained in sense. But this principle, while valid in some degree for all three tragedians, is not equally valid for all. Sophocles, as is well known, is far suppler in his iambic technique than Aeschylus and Euripides, and far more prone to write sentences which over-run the main metrical divisions.