AOAO\u0041\u004F (C99)\U000041\U00004F (C99)\x41\x4F (encoding-dependent)\101\117 (encoding-dependent)\u{41}\u{4F} (C++23)\x{41}\x{4F} (C++23, encoding-dependent)\o{101}\o{117} (C++23, encoding-dependent)\U00000041\U0000004F\u0041\u004F\x41\x4F (encoding-dependent)\101\117 (encoding-dependent)\u0041\u004F\u{41}\u{4F}\u0041\u004F\x41\x4F\41\4F\000041\00004F=41=4F%41%4F