if u want to translate horde to alliance i think the best way is to figure out the alphabet of each.
like "S R L F I W L I" in orcish could mean A L L I A N C E in human (just an example). if someone could figure out the alphabet that would be kick a**!
if u still dont get what im saying then heres an example... "A" in orcish may be read as "F" in human. again, figure out the alphabet, and you can speak the other language.