aa_	count_n
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
A	93
B	0
C	201407
D	152
E	91085
F	88
G	246
H	200937
I	345
J	0
K	183
L	221
M	15
N	367
O	0
P	93
Q	43
R	35
S	222
T	213
U	0
V	168
W	43
X	0
Y	208
Z	0