#! perl
use strict;
use warnings;
use Data::Dump;

my @A = qw{H1 H2 H3 H4 H5};
my @B = 1 .. 23;

my %h;

while (@B)
{
    push @{ $h{$_} }, shift @B // () for @A, reverse @A;
}

dd \%h;

##</code><code>##

16:10 >perl 1404_SoPW.pl
{
  H1 => [1, 10, 11, 20, 21],
  H2 => [2, 9, 12, 19, 22],
  H3 => [3, 8, 13, 18, 23],
  H4 => [4, 7, 14, 17],
  H5 => [5, 6, 15, 16],
}

16:12 >