t
r
a
n
s
f
o
r
m
a
t
i
o
n
:
2
D
s
p
a
c
e
m
a
p
p
e
d
t
o
a
l
i
n
e
b
y
a
b
c
d
=
1
.
2
.
3
.
6
.
a
1
b
2
c
3