klkl\u006B\u006C (C99)\U00006B\U00006C (C99)\x6B\x6C (encoding-dependent)\153\154 (encoding-dependent)\u{6B}\u{6C} (C++23)\x{6B}\x{6C} (C++23, encoding-dependent)\o{153}\o{154} (C++23, encoding-dependent)\U0000006B\U0000006C\u006B\u006C\x6B\x6C (encoding-dependent)\153\154 (encoding-dependent)\u006B\u006C\u{6B}\u{6C}\u006B\u006C\x6B\x6C\6B\6C\00006B\00006C=6B=6C%6B%6C