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Many of them are scooped up by chambermaids, thrown into bin bags and 
+sent off to landfill sites, which is a disaster for the environment a
+nd a social travesty given that many people around the world are goin
+g without proper sanitation.

          scooped up by
          social travesty
          without proper sanitation

use strict;
use warnings;
...
   length($b) <=> length($a);
}