rats in the sewers

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    Greetings . Speaking of creatures from sewers ... Here's one of the most 
famous urban legends of Moscow .
    Very often subway trains stop without any explanations . There's a rumour , 
that they have to stop , because batallions of rats cross rails in special 
pattern ( some "witnesses " claim , that rats move in "pig" patterns , like 
some knights from medieval history . And they move in such enormous numbers and 
show such an order , that drivers get frightened and stop trains .
               And trains stop very often .
          See , rats legends are still popular .
                                       Ivan
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