ϯϭⲉ S nn as pl, meaning unknown: PS 257 ⲁⲡⲟⲧⲁⲥⲥⲉ ⲛⲛⲓϯ. ⲉⲧϩⲟⲟⲩ that ye be worthy of mystery, paral ⲙⲛⲧϩⲁϩ ⲛϣⲁϫⲉ, ⲙⲛⲧⲙⲁⲓⲧⲟ ⲛϩⲟⲩⲟ &c.