The Urantia Book and the Roswell I-Beam

[ArMaP]

The symbols on the Roswell I-beam have never been conclusively deciphered. However, some theorists propose a palindromic reading of the symbols, suggesting that they spell "Elephtheria" (Freedom) when read one way and "Urantia" (Earth) when read in reverse.

I see that an approximation of the characters to the Greek alphabet gives "Elephtheria", but how did someone reads that in reverse to get "Urantia"? It doesn't even have the same number of letters.