| | `--> 4r
  | | `--> 3c
  | | | +--> 1.D
  | | | +--> 3.AB
  | | | +--> 3.E
  | | | +--> 4.C
  | |   ---> 3.C
  | |   ---> 4.ACD
  | | |--> 2.r.
  | | |--> 3.r.
  | | ---> Etika
  | | | |--> Pehar
  | | | `--> Prsten
  | | +--> Logika
  | | | `--> Logika