aa_	count_n
0	0
1	193573
2	0
3	217351
4	0
5	0
6	0
7	0
8	0
9	0
A	130023
B	0
C	29443
D	153154
E	173214
F	103806
G	115428
H	54720
I	155718
J	0
K	192758
L	231241
M	50281
N	160666
O	0
P	108857
Q	102439
R	117543
S	227714
T	144949
U	0
V	132032
W	23945
X	0
Y	81815
Z	0