open F1,"<1st.file" or die "can't open 1st.file: $!";
chomp(my @order = <F1>);
close F1;
my $c = 'a'x (1+(log @order)/3);
my %order = map {$_ => ++$c} @order;
open F2,"<2nd.file" or die "can't open 2nd.file: $!";
print map{/\|(.*)/s}
      sort
      map{$order{(/([^|]*)/)[0]}."|$_"}
      <F2>;
close F2;
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