X1X2X121XX211212
X1X2111122221212
X1X222111122X212
X11XX211X122X212
X11X1X212222X212
X112X1111221X212
X12X11112X221212
11X2XX2121221212
11X21111122X1212
111XX1212222X212
111X1X11XX22X212
111X11212121X212
111X2X212221X212
1112X121X1221212
1112X211X2221212
111222111X21X212
112XX11121221212
21XXX2112122X212
21XX121111221212
21XX221121211212
211X1111XX211212
212XX1112X21X212
21221X211121X212
