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#include<stdio.h>
#include<unistd.h>
int main()
{
     if(fork() == 0)
     {
          printf("First.\n");
          if(fork() == 0)
          {
               printf("Second.\n");
          }
          else
          {
               printf("Third.\n");
           }
     }
     else
     {
          printf("Fourth.\n");
          if(fork() == 0)
          {
               printf("Fivth.\n");
           }
           else
           {
               printf("Sixth.\n");
            }
      }
}
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