1
1
k
k
2
2
b
b
3
3
m
m
4
4
a
a
5
5
h
h
6
6
d
d
7
7
i
i
8
8
j
j
9
9
g
g
10
10
l
l
11
11
e
e
12
12
n
n
13
13
c
c
14
14
f
f