Little yus and big yus, or jus, are letters of the Cyrillic script representing two Common Slavonic nasal vowels in the early Cyrillic and Glagolitic alphabets. Each can occur in iotated form, formed

The Old Permic script, sometimes known by its initial two characters as Abur or Anbur, is a "highly idiosyncratic adaptation" of the Cyrillic script once used to write medieval Komi.