flfl\u0066\u006C (C99)\U000066\U00006C (C99)\x66\x6C (encoding-dependent)\146\154 (encoding-dependent)\u{66}\u{6C} (C++23)\x{66}\x{6C} (C++23, encoding-dependent)\o{146}\o{154} (C++23, encoding-dependent)\U00000066\U0000006C\u0066\u006C\x66\x6C (encoding-dependent)\146\154 (encoding-dependent)\u0066\u006C\u{66}\u{6C}\u0066\u006C\x66\x6C\66\6C\000066\00006C=66=6C%66%6C