Many languages do not distinguish vowel length phonemically, meaning that vowel length does not change meaning, and the length of a vowel is affected by other factors such as the values of the sounds around it. Languages that do distinguish vowel length phonemically usually only distinguish between short vowels and long vowels. Very few languages distinguish three phonemic vowel lengths, such as Estonian, Luiseño, and Mixe. However, some languages with two vowel lengths also have words in which long vowels appear adjacent to other short or long vowels of the same type: Japanese "hōō" "phoenix" or Ancient Greek "ἀάατος" "inviolable". Some languages that do not ordinarily have phonemic vowel length but permit vowel hiatus may similarly exhibit sequences of identical vowel phonemes that yield "phonetically" long vowels, such as Georgian გააადვილებ "you will facilitate it".