++----+++--------+++----++
+------+----------+------+
+------------------------+
+------------------------+
++----------------------++
+++--------------------+++
+++++----------------+++++
+++++++------------+++++++
++++++++++++--++++++++++++
++-----+++++--+++++-----++
+-------++++--++++-------+
++-------+++--+++-------++
++++------++--++------++++
++++++-----+--+-----+