The process of assimilation to Arabic went the furthest with the Babylonian Jews. For example, in Classical Arabic and in some spoken dialects including Mesopotamian Arabic, there is no phonemic distinction between "a" and "e", but a phonetic difference is made by the presence of an adjacent emphatic or guttural consonant. Accordingly, the Babylonian notation does not distinguish between "patach" (in other pronunciations ), "segol" (in other pronunciations or ) and "sheva na"', and the three vowels are still pronounced alike (as ) bu Yemenite Jews. In Levantine Arabic, by contrast, there are distinct "a" and "e" sounds, and both vowels are distinguished in both the Palestinian and the Tiberian notations.