How do we correctly push array into array and then retrieve each of the outer array (explain both each separately clearly) ?
illustrated

my @f; my @e;
for $i (0..40) {
   @e=($i+=2, $i+1);
    push($f,@e); # just it right ? 
 }
    
  # how go on get it under multi array control
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Please help out, very thanked in advance