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.
Checked and free vowels Checked and free vowels In phonetics and phonology, checked vowels are those that commonly stand in a stressed closed syllable; and free vowels are those that commonly stand in a stressed open syllable. The terms "checked vowel" and "free vowel" originated in English phonetics and phonology. They are seldom used for the description of other languages even though a distinction between vowels that usually have to be followed by a consonant and other vowels is common in most Germanic languages. The terms "checked vowel" and "free vowel" correspond closely to the terms "lax vowel" and "tense vowel" respectively, but many