 The association of /i/ ~ /j/ and /s/ also led to the vocalization of word-final -"s" in Italian, Romanian, certain Occitan dialects, and the Spanish dialect of Chocó in Colombia.One profound change that affected Vulgar Latin was the reorganisation of its vowel system.Classical Latin had five short vowels, "ă, ĕ, ĭ, ŏ, ŭ", and five long vowels, "ā, ē, ī, ō, ū", each of which was an individual phoneme (see the table in the right, for their likely pronunciation in IPA), and four diphthongs, "ae", "oe", "au" and "eu" (five according to some authors, including "ui").