#! /usr/bin/perl
use warnings;
use strict;
my %hash;
while(<DATA>) {
    chomp;
    my @col = split " ", $_;
    next unless exists $col[3];
    next unless $col[3] =~ /^S\d{5}GM\d{3}$/;
    my $key = substr($col[3],1,5);
    push @{$hash{$key}} , [ @col ]; 
}

for ( sort keys %hash ) {
   my $i = $_;
   $i =~ s/^0+//g;
   my $file = "output_$i.txt";
#   open FILE, ">", "$file" or
#       die("Cannot open file $file\n");
   print "FILE: $file\n";
   for my $col ( @{$hash{$_}} ) {
       my $col_count = scalar @$col - 1;
       if ( $col_count > 6 ) {
	       #
	       # use array slices to partition data.
	       #
           my $end = join " ", @$col[6..$col_count];
           my $begin = join "\t", @$col[0..5];
           print $begin, "\t", $end, "\n";
       }	      
       else {
           print join ("\t", @$col), "\n";
       }
#       replace prints with print FILE etc.

   }	   
#  close (FILE);
}


__DATA__
11880    13417    -    S00010GM001    sml_056    sp|YV02233      desc
13804    14685    -    S00010GM002    sml_045    sp|YV02643      desc
15525    18026    -    S00001GM001    sml_032    sp|V023334      desc
32763    34239    +    S00002GM001    sml_028    sp|YV02376      desc
67929    68933    -    S00003GM001    sml_025    sp|YV02346      desc not found
90562    91368    +    S00012GM001    sml_025    sp|YV02376      desc not found
10209    10433    -    S00012GM002    sml_046    sp|YV02355      desc
12522    12576    +    S00013GM001    sml_027    sp|0235777      desc
13247    13349    -    S00013GM002    sml_088    sp|YV02375      desc