Build, test, and debug regular expressions
Matches common Armenian surname endings in Cyrillic text, including -ян/-унц/-онц variants with optional -и or -ов suffixes (e.g., ян, янов, унцов), as well as the -ци ending. The word boundary ensures these suffixes occur at the end of a word, making it useful for detecting or validating Armenian family names like Саркисян or Петросян in Russian-language text.