1--------------------------------------
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 4---$2\\\\\\\\\\\\$1-----------------------
 5----$2\\\      \\\$1----------------------
 6-----$2\\\      \\\$1---------------------
 7------$2\\\      \\\\\\\\\\\\\\\\\$1------
 8-------$2\\\                    \\\$1-----
 9--------$2\\\                    \\\$1----
10---------$2\\\        ______      \\\$1---
11----------$2\\\                   ///$1---
12-----------$2\\\                 ///$1----
13------------$2\\\               ///$1-----
14-------------$2\\\////////////////$1------
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