attrition in czech attrition in french attrition in italian attrition in hungarian attrition in polish attrition in swedish attrition in german attrition in danish attrition in spanish attrition in norwegian attrition in russian attrition in belarusian attrition in finnish attrition in portuguese attrition in slovak attrition in ukrainian attrition in estonian attrition in greek attrition in lithuanian attrition in bulgarian attrition in croatian