@lines = qw(
{B001:B001}
{B002:B002}
{B003:B003}
{B00kr:B004}
{B00krup:B005}
{B00krupa:B006}
{B007:B007}
{B008:B008}
);

for (@lines) {
      if(/\{B00(.+?):B00(.+?)\}/){
         $values{$2} = $1;
         print "$1:$2:$values{$2}\n";
      }
}
__END__
1:1:1
2:2:2
3:3:3
kr:4:kr
krup:5:krup
krupa:6:krupa
7:7:7
8:8:8