d
i
m
e
n
s
i
o
n
2
D
3
D
2
D
a
1
.
b
0
.
c
0
.
d
1
.
3
D
a
1
b
0
c
0
d
0
e
1
f
0
g
0
h
0
i
1
z
o
o
m
2
a
b
c
d
=
1
.
0
0
0
.
0
0
0
.
0
0
1
.
0
0
=
1
.
