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2.1 - 1,000 - 500 3 - 70% - 2-3 unfl) 1,000 50 · 2.1 - 1,000 - 500 3 - 70% - 2-3 unfl) 1,000 50 . - 500 300-500 2.2 4 4-6 - : 12 -

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