1212\u0031\u0032 (C99)\U000031\U000032 (C99)\x31\x32 (encoding-dependent)\061\062 (encoding-dependent)\u{31}\u{32} (C++23)\x{31}\x{32} (C++23, encoding-dependent)\o{061}\o{062} (C++23, encoding-dependent)\U00000031\U00000032\u0031\u0032\x31\x32 (encoding-dependent)\061\062 (encoding-dependent)\u0031\u0032\u{31}\u{32}\u0031\u0032\x31\x32\31\32\000031\000032=31=32%31%32