Decode the Walls with the Dead Space Cipher

Kotaku: Readers Steven K., Eamon and Chris A. send this one in late, a screenshot from Chapter 6 in Dead Space that will help the rest of us decode what the alien scribblings on the walls mean. Some smudges on a few alien letters, plus some additional human phonetics (SS and TH, and "dbl letters"), but it's a start for would-be graffiti decoders. Thanks guys.