Karelian alphabet are from the ISO basic Latin alphabet, five are derived from basic Latin letters by the addition of diacritical marks, and the final character is the apostrophe, which signifies palatalization of the preceding sound. The entire range of sounds of native Karelian words is intended to be represented by this set of characters. This unified alphabet was approved in 2007 as a replacement for the separate Olonets Karelian and Karelian Proper alphabets. The letters Ä and Ö are vowels which, unlike the German umlauts, are considered to be distinct and are alphabetized separately from the corresponding vowels without the umlauts.
Phonological history of English high back vowels Phonological history of English high back vowels Most dialects of modern English have two high back vowels: the near-close near-back rounded vowel found in words like "foot", and the close back rounded vowel (realized as central in many dialects) found in words like "goose". This article discusses the history of these vowels in various dialects of English, focusing in particular on phonemic splits and mergers involving these sounds. In the Old English vowel system, there was a pair of short and long high back vowels, and , both written (the longer vowel is often distinguished as in modern editions of