DB<8> @fields = split /\| ?/, $line;

  DB<9> $new_string = join "", @fields[0,2,4,6,1,3,5,7];

  DB<10> print $new_string;
T1 CONT 11 100.00 0 0.00 T3 IEB 11 100.00 0 0.00 T5 ICBO 11 100.00 0 0.00 T7 VFBE 11 100.00 0 0.00 T2 IEB 11 100.00 0 0.00 T4 ICBO 11 100.00 0 0.00 T6 BVEB 11 100.00 0 0.00 T8 VFBE 11 100.00 0 0.00