The values of the four variables mapped onto phylogenies. The depicted pyhlogenies were used for both phylogenetic path analysis and Continuous method: a) world tree, b) Bantu, and c) Indo-European. Unlike other large language families, Indo-European and Bantu show variation in the presence/absence of phonological and unpredictable rules. The presence of phylogenetic signal is attested for all four features on the global tree and for all features but unpredictable rules on Indo-European tree. The distribution of the features in Bantu does not seem to be phylogenetically constrained.