A B 24
A C 23
A D 22
A E 21
A F 20
A G 19
A H 18
A I 17
A J 16
A K 15
A L 14
A M 13
M N 12
M B -1
M C -2 
M D -3
M E -4
M F -5
M G -6
M H -7
M I -8
M J -9
M K -10
M L -11
B N 12
C N 12
D N 12
E N 12
F N 12
G N 12
H N 12
I N 12
J N 12
K N 12
L N 12