and Glagolitic alphabets. Each can occur in iotated form (? ?, ? ?), formed as ligatures with the decimal i (?).

Phonetically, little yus represents a nasalized front vowel, possibly (like the French 'in' in "cinq" or Polish 'e' in "kes"), while big yus represents a nasalized back vowel, such as IPA (like the French 'on' in "bombon" or Polish 'a' in "kat").