iiii\u0069\u0069 (C99)\U000069\U000069 (C99)\x69\x69 (encoding-dependent)\151\151 (encoding-dependent)\u{69}\u{69} (C++23)\x{69}\x{69} (C++23, encoding-dependent)\o{151}\o{151} (C++23, encoding-dependent)\U00000069\U00000069\u0069\u0069\x69\x69 (encoding-dependent)\151\151 (encoding-dependent)\u0069\u0069\u{69}\u{69}\u0069\u0069\x69\x69\69\69\000069\000069=69=69%69%69