 The interchange of vowels of similar sounds is very frequent in this manuscript . The letters <unk> and Μ are occasionally confused , and the cluster <unk> is substituted with <unk> . This may be an argument which points to Egypt , but it is not universally conceded . A lot of <unk> errors occur in the text ; for example , <unk> is exchanged for ε , <unk> for <unk> and η for <unk> . It has not more <unk> than other manuscripts of the same date . 
