ɐ ɹˈɪdʒɪd kˈæst sˈɪstəm hɐz dɪvˈɛləpt, wɪð ˈiːtʃ ˌɑːkjʊpˈeɪʃən bˌiːɪŋ kənfˈaɪnd tʊ ɐ pɚtˈɪkjʊlɚ sˈɛt ʌv fˈæmɪliz.
A rigid caste system has developed, with each occupation being confined to a particular set of families.