=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
=XXXXXXX         XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX              # X
=XXX      X    X        XXXXXXXXXXXXXXXXXXXXXXXX                  # X
=@          X       X       XXXXXXXXXXXXXXXXX        X            # X
=@      X       X       X      XXXXXXXXXXXX    X        X         # X
X@          XXXXXXXX       X       XXXXXX          X              # X
X@      XXXXXXXXXXXXXXXXX     X  X     X      X         XXXXXXXXXXXXX
X@   XXXXXXX X   XXXXXXXXXXX       X      X          XXXXXXXXXXXXXXXX
XXXXXXXXXXXXX  XX XXXXXXXXXXXXX      X        X    XXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXX    XXXXXXXXXXXXXXXXXX      X       XXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXX X XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX