|
R |
S |
|||||
|
A |
B |
C |
D |
E |
F |
|
|
a |
b |
c |
a |
f |
d |
|
|
d |
a |
e |
d |
c |
b |
|
|
a |
d |
c |
|
R × S |
|||||
|
A |
B |
C |
D |
E |
F |
|
a |
b |
c |
a |
f |
d |
|
a |
b |
c |
d |
c |
b |
|
d |
a |
e |
a |
f |
d |
|
d |
a |
e |
d |
c |
b |
|
a |
d |
c |
a |
f |
d |
|
a |
d |
c |
d |
c |
b |