aa_	count_n
0	0
1	73253
2	0
3	57109
4	0
5	0
6	0
7	0
8	0
9	0
A	29125
B	1
C	3596
D	20265
E	26700
F	15320
G	22760
H	8112
I	24566
J	0
K	26138
L	37838
M	8546
N	19866
O	0
P	13818
Q	19294
R	18497
S	21770
T	19251
U	0
V	23677
W	3938
X	30
Y	11809
Z	0