category1
|__category1.1
   |__category1.1.1
   |__category1.1.2
   |__category1.1.3
      |__category1.1.3.1
      |__category1.1.3.2
         |__category1.1.3.2.1
         |__category1.1.3.2.2
         |__category1.1.3.2.3
|__category1.2
|__category1.3
|__category1.4
category2
category3
category4
category5