input: <p class="normal">The majority of CA-MRSA strains are sensitive [<a id="ch1-bid.38" href="#rch1-bid.38">38</a>,<a id="ch1-bid.38" href="#rch1-bid.39">39</a>]</span>. SXT has [<a id="ch1-bid.101" href="#rch1-bid.101">101</a>]</span>). SXT can be considered for use in selected MRSA cases where patients are not tolerant of other, more active, antibiotics.</p>
<h3 class="h3t">Rifampicin</h3>


##############
open(file,"<chapter01.xml")or die "the Erroer line si $!";
@filelist = <file>;
 $coutnline=0;
 $count =0;
foreach(@filelist)
{
# print $_;
 $tlist= $_;

   if($tlist =~m/id="ch1-bid.[0-9]+/i)
  {
   #print $&."\n";
    $mc_line = $&;
     chomp;
    if($mc_line =~ s/(?:\s*\b$re)+$//)
    {
       print "[$_]\n";
#     print  "$& test1  \n";;
    }
    else
    {
     #print "not matched \n";
     push(@ovr,$_)
    }
    $coutnline++;
  }
  else
  {
   push(@overlist,$_);
  # print "the line is over writed \n";
   $count++;
  }
}
close(file);

print $coutnline."\n";
print $count;

#out put needs

input: <p class="normal">The majority of CA-MRSA strains are sensitive [<a id="ch1-bid.38" href="#rch1-bid.38">38</a>,<a href="#rch1-bid.38">38</a>]</span>. SXT has [<a id="ch1-bid.101" href="#rch1-bid.101">101</a>]</span>). SXT can be considered for use in selected MRSA cases where patients are not tolerant of other, more active, antibiotics.</p>
<h3 class="h3t">Rifampicin</h3>


##</code><code>##

 input : <p class="normal">nfection <span class="small">[<a id="ch1-bid.1" href="#rch1-bid.1">1</a>]</span>.</p>
<p class="normal">nfection <span class="small">[<a id="ch1-bid.2" href="#rch1-bid.2">2</a>]</span>.</p>
<p class="normal">nfection <span class="small">[<a id="ch1-bid.4" href="#rch1-bid.4">4</a>]</span>.</p>
<p class="normal">nfection <span class="small">[<a id="ch1-bid.4" href="#rch1-bid.4">4</a>]</span>.</p>

-----------------------------------


output : <p class="normal">nfection <span class="small">[<a id="ch1-bid.1" href="#rch1-bid.1">1</a>]</span>.</p>
<p class="normal">nfection <span class="small">[<a id="ch1-bid.2" href="#rch1-bid.2">2</a>]</span>.</p>
<p class="normal">nfection <span class="small">[<a id="ch1-bid.4" href="#rch1-bid.4">4</a>]</span>.</p>
<p class="normal">nfection <span class="small">[<a href="#rch1-bid.4">4</a>]</span>.</p>
======end
don't want  id="ch1-bid.4" tab. pls find