X1X1X2122121XX21
X1X12X22X2112121
X121X2221X121121
11XX1212XX122121
11X122X212XX1121
111XX222221XX121
112X22X2X111XX21
1121X112X22X2121
11212X122XX2X121
21XXXX1212221121
21X1X122X11X1X21
21X111X22212X121
211XXX122X112X21
211X2112X2X1X121
212X121221XX1121
212X21X21X1X2121
21211XX2XX211121
