Coordinate X: Y: Search

90 80 90 81 90 82 90 83 90 84 90 85 90 86 90 87 90 88 90 89 90 90 90 91 90 92 90 93 90 94 90 95 90 96 90 97 90 98 90 99 91 00 91 01 91 02 91 03 91 04 91 05 91 06 91 07 91 08 91 09 91 10 21729 21728 21727 21726 21725 21724 21723 21722 21721 21720 21719 21718 21717 21716 21715 21714

= Free Coordinate    = Occupied(Single Region)     = Occupied (Var Region)     = Center of the grid