Why are we doing your job for you?
Didn't your Mommy teach how to google?
It's a runic Alphabet used by gangs and it may be as easy as abcdefg etc....
This is used to pass messages in prison if you friend doesn't know this then his is truly a fucking dumbass.
https://laughingdevilblog.wordpress.com/2017/06/07/understanding-gang-culture/