Original sentence: All these uses are normally not standard.However, a small number of words coming from foreign languages, or derived from Greek or Latin, do make use of non-standard characters, and are considered correct: xilofono, xenofobia, yen
Edited sentence: All these uses are normally not accepted as grammatically correct.However, some words coming from foreign languages, or derived from Greek or Latin, do make use of non-standard characters, and are considered correct: xilofono, xenofobia, yen.Their numbers are however very small