α
0
.
8
β
0
.
5
s
h
o
w
α
A
s
h
o
w
β
B
s
h
o
w
o
r
i
g
i
n
a
n
d
c
o
n
s
t
r
u
c
t
i
o
n
l
i
n
e
s