Linear B
Linear A has hundreds of signs, believed to represent syllabic, ideographic, and semantic values in a manner similar to Linear B. While many of those assumed to be syllabic signs are similar to ones in Linear B, approximately 80% of Linear A's logograms are unique; the difference in sound values between Linear A and Linear B signs ranges from 9% to 13%. It primarily appears in the left-to-right direction, but occasionally appears as a right-to-left or boustrophedon script.