kk\u006B (C99)\U00006B (C99)\x6B (encoding-dependent)\153 (encoding-dependent)\u{6B} (C++23)\x{6B} (C++23, encoding-dependent)\o{153} (C++23, encoding-dependent)\U0000006B\u006B\x6B (encoding-dependent)\153 (encoding-dependent)\u006B\u{6B}\u006B\x6B\6B\00006B=6B%6B