[PAD]
[UNK]
[CLS]
[SEP]
[MASK]
A
C
D
E
F
G
H
I
K
L
M
N
P
Q
R
S
T
V
W
Y
[CAMEL]
[HUMAN]
[MOUSE]
[RABBIT]
[RAT]
[RHESUS]
[HEAVY]
[LIGHT]