t
u
r
n
s
1
b
a
c
k
=
4
.
5
0
0
0
f
r
o
n
t
=
4
.
5
0
0
0
l
e
f
t
=
3
.
2
5
0
0
r
i
g
h
t
=
3
.
2
5
0
0
b
o
t
t
o
m
=
2
.
7
5
0
0
t
o
p
=
2
.
7
5
0
0