{
  feet   => ["left", "right"],
  shoes  => ["loader", "sneaker", "boot"],
  things => [],
}

{
  feet   => ["left", "right"],
  shoes  => ["loader", "sneaker", "boot", "slippers"],
  things => [],
}



{
  feet   => ["left", "right"],
  shoes  => ["loader", "sneaker", "boot", "slippers"],
  things => [],
}