I think most have now been decoded, and there are some interesting variations. The link I put in the previous thread on this was:
http://www.heenan.net/trivia/language/alfabet.html. Those of you who didn't see that thread should look at as the other posts were interesting and germane:
http://wordsmith.org/board/showflat.pl?Cat=&Board=wordplay&Number=27935&page=2&view=collapsed&sb=5

Rod