A B C D E F G H I J K L M N O
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[ 1]● ==> H8   [ 2]○ ==> H9   [ 3]● ==> H6   [ 4]○ ==> I10  [ 5]● ==> G9
[ 6]○ ==> F10  [ 7]● ==> G8   [ 8]○ ==> G10  [ 9]● ==> H10  [10]○ ==> F8
[11]● ==> F11  [12]○ ==> G11  [13]● ==> H12  [14]○ ==> I11  [15]● ==> H11
[16]○ ==> J11  [17]● ==> I12  [18]○ ==> J10  [19]● ==> E9   [20]○ ==> J9
[21]● ==> J8   [22]○ ==> K12  [23]● ==> L13  [24]○ ==> L11  [25]● ==> I9
[26]○ ==> H13  [27]● ==> I8   [28]○ ==> K8   [29]● ==> J13  [30]○ ==> K9
[31]● ==> K11