12111X1X22111212
X21112X122X11212
12XX111222X11212
121XXXX122211212
221211XX22211212
12X1X21X221X1212
X2111122221X1212
22111X11222X1212
12111XX222121212
12XX1X212211X212
X211X2122211X212
121X121122XXX212
