A B C D E F G H I J K L M N O
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  1 └┴┴┴┴┴┴┴┴┴┴┴┴┴┘ 

[ 1]● ==> H8	[ 2]○ ==> H9	[ 3]● ==> H6	[ 4]○ ==> I10	[ 5]● ==> I6
[ 6]○ ==> I9	[ 7]● ==> G9	[ 8]○ ==> G8	[ 9]● ==> J11	[10]○ ==> J7
[11]● ==> I11	[12]○ ==> H10	[13]● ==> I7	[14]○ ==> J6	[15]● ==> G11
[16]○ ==> F11	[17]● ==> F10	[18]○ ==> E11	[19]● ==> E9	[20]○ ==> H12
[21]● ==> H11	[22]○ ==> K11	[23]● ==> G7	[24]○ ==> I5	[25]● ==> H7