Linear A
Linear A has about fifty signs that are similar to those in Linear B. About 80% of the signs in Linear A are unique. Using the knowledge from Linear B to read Linear A produces text which cannot be read. The language used has been called Eteocretan. It does not seem to be related to any known language. Today, about 70 characters (probably representing syllables) are known. The meaning of about 100 ideographic characters is known. These are combined with the syllables. Also, there are a few numerals whose value is known.