Brahmi Alphabet

Brahmi Alphabet
Recent studies have traced the origins of Brahmi back to 4067 B.C.
Simplest lists entail 10 letters: A, K, G, T, Th, D, P, B, Y, V (qv).  Of these
3 are vowels                                A                                      Y  V
                                                       A                                       I  U
7 are consonants                           K  G  T  TH  D  P B  
These consonants are first letters of divisions of Sanskrit (cf. 7 vargas). As such they are a kind of summary of the alphabet.