 
 <prompt> Wetin S mean for SPE? Based on di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: In 1968 Noam Chomsky and Morris Halle publish The Sound Pattern of English (SPE), wey be di foundation for generative phonology. For dis view, phonological representations na sequences of segments wey dey made up of distinctive features. Dis features na expansion of earlier work by Roman Jakobson, Gunnar Fant, and Morris Halle. Di features describe aspects of articulation and perception, dey come from a universally fixed set, and get binary values + or −. E get at least two levels of representation: underlying representation and surface phonetic representation. Ordered phonological rules dey control how underlying representation dey transform into di actual pronunciation (di so-called surface form). An important consequence of di influence wey SPE get for phonological theory na say e reduce di importance of syllable and focus more on segments. Furthermore, di generativists combine morphophonology with phonology, wey solve some problems and create new ones. 