This study is an investigation of three phonological changes from Latin to Spanish and consonant + yod inversion and palatalization, palatalization of Latin and Romance obstruent + lateral clusters, and lenition and the development of the strong word boundary. It accounts for certain aspects of palatalization, segment inversion, and the creation and extension of an obstruent strength pattern by investigating the specific ways in which phonological rules and representations are modified and restructured during the course of a sound change.
