+--> Fizika
  | | ---> PAU
  | | | +--> 2E
  | | | +--> 3E
  | | | +--> 4E
  | | +--> SJZ
  |   |--> 1A
  |   |--> 2A
  |   |--> 2C
  |   |--> 2D
  |   |--> 2E
  |   `--> 3D
  +--> TZK