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<pre>
              ________
             /\       \
            /  \       \
           /    \       \
          /      \_______\
          \      /       /
        ___\    /   ____/___
       /\   \  /   /\       \
      /  \   \/___/  \       \
     /    \       \   \       \
    /      \_______\   \_______\
    \      /       /   /       /
     \    /       /   /       /
      \  /       /\  /       /
       \/_______/  \/_______/ 
</pre>