seek(INPUT,$start_offset_target,0);
sysread(INPUT,$target_data,$end_offset_target-$start_offset_target+1 );	
while ($target_data=~m/$pattern/gi)

                            {					
							
							
							    $space='';
                                $c=0;
								 $m = $1;                                              
                                while($m=~/(\n)/gi)
                                {
            					 $c+=1;
                                }
                                $space=' ' x $c;
                                $space.=' ' x length($m);
                            	$target_data=~s/$pattern/$space/i;
                            }