None. And that is in spite of massive attempts over the 20th century, including some of the first applications of computers to a problem of this nature. The conclusion drawn from this lack of progress is that the corpus is simply too small for decipherment and/or we lack any surviving relatives for the language that the script recorded.
> The extant corpus, comprising some 1,427 specimens totalling 7,362 to 7,396 signs, if scaled to standard type, would fit easily on two sheets of paper. [1]
