Content-Type: text/html
Content-Length: 234

failed, that's OK
<br />
size: 50/50<br />
study size: 0<br />
!select
<br />
sEl!ct
<br />
s!l!ct
<br />
2
<br />
study size: 40<br />
!2312312
<br />
!
<br />
212.html
<br />
$r.pattern: ^[a-z\d_]+$<br />
$r.options: gI<br />
<br />