disappearance of indigenous languages has been becoming one of the most serious problems in the world. According to United Nations Educational, Scientific and Cultural Organization (UNESCO), more than 2000 languages in the world have 1000 speakers or less, and it is estimated that half of the world’s 7000 official languages will become extinct by the end of the 21st century (Ludovica 2015). This is mainly because most indigenous languages are nowadays replaced by the dominant languages and they are not properly