1121X11111111112
1121X11X11121X12
X12X212111111112
X12X212X11121X12
X12XX11X11111112
X12XX11111121X12
1121212X11111112
1121212111121X12
X121211111121112
X121211X11111X12
112XX12111121112
112XX12X11111X12
X121X12111111X12
X121X12X11121112
112X211111111X12
112X211X11121112
