X11X1X21221X1110
X1221211112XX210
111XX2212X111X10
11211X11X1122110
21X111X11X111210
1122X21111XXX211
21X21221XX22X111
211XX211X11X1X11
211X12X1X1X1X111
21112XX1X1111111
11XX11212212XX21
112X2211X212XX21
212X12X1111XX121
2121X1X1X21X2X21
