Textual analysis of Common offices by St. Kliment of Ohrid

First Slavic series of Common Offices consists of six offices, written by St. Kliment Ohridski, those are the offices for prophet, for apostle, for Church father, for reverend, for martyr (man), for martyr (woman). Four manuscripts are available nowadays, in which the the Common Offices are preserved: one South Slavonic and three Old Russian. The juxtaposition of the texts of the offices in these four manuscripts witnesses that they belong to two different families, every family consisting of two manuscripts, which have a common mistake.