Languages may fail to achieve a one-to-one correspondence between letters and sounds in any of several ways:
lˈæŋɡwɪdʒᵻz mˈeɪ fˈeɪl tʊ ɐtʃˈiːv ɐ wˈʌntəwˈʌn kˌɔːɹɪspˈɑːndəns bᵻtwˌiːn lˈɛɾɚz ænd sˈaʊndz ɪn ˌɛni ʌv sˈɛvɹəl wˈeɪz: