I have constants like

use constant GROUPS => {
                          A => 1,
                          B => 2,
                          C => 3
                       };

use constant A      => {
                          1 => x,
                          2 => y,
                          3 => z
                       };

use constant B      => {
                          1 => x,
                          2 => y,
                          3 => z
                       };
[download]

I want to loop through it like

while ( my ($k,$val) = each %{ +GROUPS } ) {
[download]

here is the problem I need to loop through the $k which is a constant hash, I would like to know how I can represent $k hash in the below each() ,so that it represents constants hashes A,B, etc

  while ( my ($k,$val) = each ($k)) {
     
     print $k{val} ;
  } 
}
[download]

Thanks,
Shijumic

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