Russian language:

Older letters of the Russian alphabet include , which merged to (/je/ or /e/); and , which both merged to (/i/); , which merged to (/f/); , which merged to (/u/); , which merged to (/ju/ or /u/); and /, which later were graphically reshaped into and merged phonetically to /ja/ or /a/. While these older letters have been abandoned at one time or another, they may be used in this and related articles. The yers and originally indicated the pronunciation of ultra-short or reduced /u/, /i/.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". What did the r become?
unanswerable