aa_	count_n
0	0
1	21636
2	0
3	51061
4	0
5	0
6	0
7	0
8	0
9	0
A	5286
B	0
C	884
D	4921
E	5347
F	5951
G	4558
H	1808
I	7978
J	0
K	9114
L	9822
M	1843
N	7416
O	0
P	3012
Q	4483
R	3301
S	6196
T	5288
U	0
V	5948
W	1077
X	0
Y	3470
Z	0