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