N is for Tree

Well, from the other side it looks like an "n". A bit.
In a previous job, we sat next to some people, part of whose job was to read out pass codes over the 'phone. "Bravo, Foxtrot, Tango" etc.
We spent some time coming up with a less helpful alphabet; A is for aegis. G for gnome and so on. We were particularly pleased with 'Cnemis'.