Yes
7
F
R 1 2
r 7 9
c 5 6
c 4 5
C 2 3
D 1 8
No
Yes
2
r 4 6
c 7 9
No
Yes
7
F
R 2 3
r 4 5
r 5 6
c 7 9
C 1 2
D 1 8
No