1X11X1X21121X1MM
XX11X1X21121X1MM
1211X1121X1121MM
X211X1121X1121MM
1X1121XX1121X1MM
XX1121XX1121X1MM
1211211X1X1121MM
X211211X1X1121MM
XX11211X1X2121MM
1X11X11X111121MM
121121121111X1MM
X211212X1X21X1MM
1X11X11X1X11X1MM
