└ travel goods
      └ Suitcases, carry-on bags
         ├ Trunk Type Suitcase
         ├ Hard Type Suitcase
         ├ Soft Type Suitcase
         ├ Carry-on (trunk type)
         ├ Carry-on (hard type)
         ├ Carry-on (soft type)
         ├ Casual suitcases
         ├ suitcase cover
         └ suitcase belt
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