front |1 |2 |3 |4 |5 |6 |7 |8 |9 |10 |11 |12 |13 |14 |15 |16 |17 |18 |19 |20 |21 |22 |23 |review

�� , �� , �� . ��, �� . �� (diagnostic) �� , �� , �� . �� . �� . �� . �� . �� , �� . �� , �� . �� , �� .