A    C    G    T    .    N
A   91 -114  -31 -123    0  -43
C -114  100 -125  -31    0  -43
G  -31 -125  100 -114    0  -43
T -123  -31 -114   91    0  -43
.    0    0    0    0    0    0
N  -43  -43  -43  -43    0  -43