aa_	count_n
0	0
1	21972
2	48028
3	6498
4	8435
5	0
6	0
7	0
8	0
9	0
A	679
B	0
C	92
D	508
E	633
F	498
G	211
H	199
I	783
J	0
K	1059
L	1116
M	162
N	744
O	0
P	53
Q	527
R	469
S	542
T	378
U	0
V	456
W	79
X	0
Y	309
Z	0