Tytuł pozycji:
ORIGIN OF OLD CHURCH SLAVIC JAZ / AZ 'I' (Jak powstalo staro-cerkiewno-slowianskie jaz' / az')
There is a rule according to which in Baltic and Slavic languages, the Proto-Indo-European sequence of short vowel plus voiced stop was reflected by lengthened vowel + voiced stop, while short vowel plus aspirate developed into short vowel plus voiced stop. Opinions on this rule are divided, but if it were correct, it could explain the lengthening which occurred *egom > *egom >OSC jaz' / az'.