AAAA\u0041\u0041 (C99)\U000041\U000041 (C99)\x41\x41 (encoding-dependent)\101\101 (encoding-dependent)\u{41}\u{41} (C++23)\x{41}\x{41} (C++23, encoding-dependent)\o{101}\o{101} (C++23, encoding-dependent)\U00000041\U00000041\u0041\u0041\x41\x41 (encoding-dependent)\101\101 (encoding-dependent)\u0041\u0041\u{41}\u{41}\u0041\u0041\x41\x41\41\41\000041\000041=41=41%41%41