M and N are "mutes" in Latin linguistics. I think that's why they are next to each other on the keyboard. Also, in Latin (not as sure about the Greek) the N's and M's at the end of words tend to hold weak positional values...i.e. they elide (are dropped in poetry) and decline (endings change to alter syntactical meaning.) So the Stormrider's error may have been typing, linguistic, or, as suggested above, the transposition of his thought onto the data. P.S. I have no idea what any of this means at this point:)