h
w
e
e
f
f
s
f
4
v
v
s
d
c
r
f
6
j
b
s
v
x
a
s
x
z
5
2
z
c
g
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
x
x
x
x
x
x
x
x
x
h
x
x
x
x
x
x
x
a
a
r
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
w
w
w
w
q
q
q
q
q
q
q
b
b
z
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
s
s
s
s
s
s
s
s
s
s
a
a
a