 A R N D C Q E G H I L K M F P S T W Y V 
A 4 -1 0 -2 0 0 -3 -1 0 0 0 -1 1 0 0 0 0 0 0 1 
R -1 4 0 -1 -1 0 -1 -1 0 -2 -1 2 0 -2 0 -1 0 0 -1 -2 
N 0 0 4 0 0 1 0 0 0 -1 -1 0 0 -1 0 1 1 -1 0 -1 
D -2 -1 0 4 -2 -1 0 -2 -1 -4 -3 -1 -1 -4 -1 -1 -1 -3 -3 -3 
C 0 -1 0 -2 4 0 -2 0 0 0 0 -2 1 0 -1 0 0 0 0 0 
Q 0 0 1 -1 0 4 0 0 0 0 0 0 1 0 0 0 1 0 1 -1 
E -3 -1 0 0 -2 0 4 -2 -1 -4 -3 -1 -1 -4 -1 -2 -1 -2 -4 -4 
G -1 -1 0 -2 0 0 -2 4 -1 -2 -1 -1 0 -2 0 0 0 -2 -2 -2 
H 0 0 0 -1 0 0 -1 -1 4 -1 -1 0 0 0 0 -1 -1 0 0 -1 
I 0 -2 -1 -4 0 0 -4 -2 -1 4 1 -2 2 0 0 -1 0 0 0 2 
L 0 -1 -1 -3 0 0 -3 -1 -1 1 4 -2 2 1 0 -1 0 1 0 1 
K -1 2 0 -1 -2 0 -1 -1 0 -2 -2 4 0 -2 0 0 0 -2 -2 -3 
M 1 0 0 -1 1 1 -1 0 0 2 2 0 4 2 1 0 0 2 0 1 
F 0 -2 -1 -4 0 0 -4 -2 0 0 1 -2 2 4 0 -2 -2 2 1 0 
P 0 0 0 -1 -1 0 -1 0 0 0 0 0 1 0 4 0 0 0 -1 0 
S 0 -1 1 -1 0 0 -2 0 -1 -1 -1 0 0 -2 0 4 1 -1 -1 -1 
T 0 0 1 -1 0 1 -1 0 -1 0 0 0 0 -2 0 1 4 -1 -1 0 
W 0 0 -1 -3 0 0 -2 -2 0 0 1 -2 2 2 0 -1 -1 4 1 0 
Y 0 -1 0 -3 0 1 -4 -2 0 0 0 -2 0 1 -1 -1 -1 1 4 0 
V 1 -2 -1 -3 0 -1 -4 -2 -1 2 1 -3 1 0 0 -1 0 0 0 4 

