A B C D E F G H I J K L M N O
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1 └┴┴┴┴┴┴┴┴┴┴┴┴┴┘
[ 1]● ==> H8 [ 2]○ ==> I9 [ 3]● ==> J9 [ 4]○ ==> J8 [ 5]● ==> I7
[ 6]○ ==> H7 [ 7]● ==> J6 [ 8]○ ==> G9 [ 9]● ==> K5 [10]○ ==> L4
[11]● ==> K6 [12]○ ==> K7 [13]● ==> L6 [14]○ ==> I6 [15]● ==> M6
[16]○ ==> N6 [17]● ==> M7 [18]○ ==> N8 [19]● ==> M8 [20]○ ==> M5
[21]● ==> M9 [22]○ ==> M10 [23]● ==> J4 [24]○ ==> I3 [25]● ==> K3
[26]○ ==> G8 [27]● ==> K4 [28]○ ==> K2 [29]● ==> J5