Hebrew alphabet written from right to left. It has 22 letters, five of which use different forms at the end of a word. In the traditional form, vowels are indicated by the weak consonants Aleph (), He (), Vav (), or Yodh () serving as vowel letters, or "matres lectionis": the letter is combined with a previous vowel and becomes silent, or by imitation of such cases in the spelling of other forms. Also, a system of vowel points to indicate vowels (diacritics), called niqqud, was developed. In modern forms of the alphabet, as in the case of Yiddish and to some
Hebrew alphabet "dagesh kal", also modifies the sounds of the letters ב, כ and פ in modern Hebrew (in some forms of Hebrew it modifies also the sounds of the letters ג, ד and/or ת; the "dagesh chazak" – orthographically indistinguishable from the "dagesh kal" – designates gemination, which today is realized only rarely – e.g. in biblical recitations or when using Arabic loanwords). "alef", ע "ayin", "vav" and "yod" are letters that can sometimes indicate a vowel instead of a consonant (which would be, respectively, ). When they do, and are considered to constitute part of the vowel designation in combination