2121XX12XXX11112
2121XX1X11X1X121
2122XX1X1211X102
2122221XX2X12102
212X111121212122
21222112X2212120
21X1212221112110
2X1X2X12XX112122
22222111X21X2120
2XX2X2X222111110
2122X2X22X12X121
22221212XXXX2112
221212XX22112111
