aa_	count_n
0	0
1	150766
2	226429
3	99339
4	72094
5	0
6	0
7	0
8	0
9	0
A	10367
B	0
C	940
D	5147
E	6705
F	2777
G	3756
H	2282
I	4781
J	0
K	4778
L	10184
M	2305
N	3576
O	0
P	1058
Q	5021
R	7486
S	4954
T	3623
U	0
V	4732
W	1167
X	0
Y	2448
Z	0