Bulgarian alphabet been retained in Roman script. The 2012 "Official Orthographic Dictionary of the Bulgarian Language" by the Bulgarian Academy of Sciences permits widely known proper names to remain in their original alphabet. Example sentences are given, all containing names of American IT companies: Yahoo, Microsoft, YouTube, PayPal, Facebook. Bulgarian alphabet The Bulgarian alphabet is used to write the Bulgarian language. In AD 886, the Bulgarian Empire introduced the Glagolitic alphabet, devised by Saints Cyril and Methodius in the 850s. The Glagolitic alphabet was gradually superseded in later centuries by the Cyrillic script, developed around the Preslav Literary School, Bulgaria at the
Latin-script alphabet respective alphabet sequences. In some languages, digraphs are included in the collation sequence (e.g. Hungarian CS, Welsh RH). The International Phonetic Alphabet is also derived mainly from the Latin script. Coverage of the letters of the ISO basic Latin alphabet can be and additional letters can be Most alphabets have the letters of the ISO basic Latin alphabet in the same order as that alphabet. Some alphabets regard digraphs as distinct letters, e.g. the old Spanish alphabet had CH and LL sorted apart from C and L. Some Spanish dictionaries still list "ll" separately. Some alphabets sort letters that have