3 3
9
3
A B B
a b b
B C C
b c c
C D D
c d d
D E E
d e e
E F F
e f f
F G G
f g g
G H H
g h h
H I I
h i i
I J J
i j j
J 2 2
j 1 1
5
9 0 0 6 5 4 0 2 1
3 5
3 3
5 5
5 6
5 5
5
3
1 1
a 2
k A 2
2 2
1 2
1 1
2 A
A A
1 A
2 a
1 k
2 2
2 6
1 6
1 1
0 0 6 6 4 0 2 1
3 6 6
9