E
K
G
L
N
F
F
G
L
E
N
L
J
G
R
E
P
I
X
B
Q
J
K
G
B
Q
O
K
E
Z
P
X
Q
L
E
K
N
E
L
R
Q
G
Z
R
G
O
N
E
K
G
B
L
W
Z
P
X
T
G
F
O
G
I
N
L
E
G
B
E
K
N
Z
L
P
R
Q
G
E
C
O
N
Q
Z
L
X
Q
L
F
P
H
 
.
source: Isaac Asimov


 

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