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---$2\\\\\\\\\\\\$1-----------------------
----$2\\\      \\\$1----------------------
-----$2\\\      \\\$1---------------------
------$2\\\      \\\\\\\\\\\\\\\\\$1------
-------$2\\\                    \\\$1-----
--------$2\\\                    \\\$1----
---------$2\\\        ______      \\\$1---
----------$2\\\                   ///$1---
-----------$2\\\                 ///$1----
------------$2\\\               ///$1-----
-------------$2\\\////////////////$1------
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