| | +--> 1D
  | | |--> 2C
  | | +--> 2D
  | | |--> 3C
  | | |--> 3D
  | | `--> 4C
  +--> Fizika
  | | |--> 1.E
  | | |--> 2. E
  | | +--> 3.E
  | | `--> 4.E
  |   |--> 1.e
  |   |--> 2.a
  |   |--> 2.b
  |   |--> 2.d
  |   `--> 3.a
  +--> TZK