Text F). Twenty-one opisthographs (manuscripts that are inscribed on both sides of the material) have been discovered in the Qumran caves, twenty of them from Cave 4Q.107 Eight of these are papyrus Cryptic A manuscripts, mostly unidentified. Two of them are documentary texts (4Q342 and 343), which are often opisthographs. However, six have two different literary texts on the verso (first use) and recto (second use), while two (4Q324/355 and 4Q460 frag. 9/4Q350) have a literary text on the verso and