Contribute correction: T-GRAPH

  ______   __   __   ______      ___    
 /_   _//  \ \\/ // |      \\   / _ \\  
 `-| |,-    \ ` //  |  --  //  / //\ \\ 
   | ||      | ||   |  --  \\ |  ___  ||
   |_||      |_||   |______// |_||  |_||
   `-`'      `-`'   `------`  `-`   `-`