1. 2. 3. 4.
, . : 36-40(42-46)
42 - 46 . , .
1. 2. 3.
,
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https://www.youtube.com/watch?v=voi4JcOZ768&list=PLhuA9d7RIOdYnfvjYvQSF5--oHIv2U5vn