[split] f68r1 - circles with moon, sun and stars/planets

[Jorge_Stolfi]

In any case, no language has a vast majority of nouns beginning with the same letter or sound.

But there are answers to that:

1. The glyphs aoy may be pitch marks, for languages with phonemic tone like Swedish, Lithuanian, Latvian, Serbian, Slovenian, Limburgish, Franconian,Abkhaz,...
   
2. They may be tone marks, like the "dummy" initial letters of Tibetan.
   
3. They may be marks for the quality of the next vowel.
   
4. They may be marks for voicing or other quality of the next consonant (p/B,k/g, etc).
   
5. They may be the three vowels of a Semitic language like Hebrew, Arabic or Ge'ez (either the weak or the strong ones).
   
6. The initial aoy may be a non-phonetic case marker.
   
7. It may be a word class marker, like the prefixes "m-", "wa-", "u-" of Swahili.
   

Maybe more ...

All the best, --stolfi