3 Malformed UTF-8 character
12 Malformed UTF-8 character at - line 4.
23 \x80 will produce malformed UTF-8 character; use \x{80} for that at - line 4.
24 \xff will produce malformed UTF-8 character; use \x{ff} for that at - line 4.
25 Malformed UTF-8 character at - line 5.