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1. The story 'Zigzag' is written by Liam O'Flaherty.
   
 
2. The narrator's emphasis on the noise in Dr. Krishnan's clinic has a reason.
   
 
3. Dr Somu was brother of Dr Krishnan.
   
 
4. Though Dr. Krishnan accepted to help Dr. Somu, Dr Somu misunderstood it as 'no'.