<imgthe literal text <img (case insensitive) Negated Character Class[^>]+ +matches at least one character outside the set below:
>the literal > (6210 / 768 / 3E16)
srcthe literal text src (case insensitive) \s*any whitespace character, repeated any number of times
=the literal = (6110 / 758 / 3D16)
\s*any whitespace character, repeated any number of times
"the literal " (3410 / 428 / 2216)
'the literal ' (3910 / 478 / 2716)
Group 2(((?!alkatreszkepek).)*?) Group 3((?!alkatreszkepek).)*? *?repeats the group contents below any number of times:
Negative Lookahead(?!alkatreszkepek) alkatreszkepekthe literal text alkatreszkepek (case insensitive) .any character (except for line terminators)