21XXX22111211121
XX1122X2X1211121
X2222111XX211121
1X1XXX112X211121
1XX21XXX12211121
XXXX1112112X1121
2X2111X1212X1121
X111X12X1X2X1121
11X2221X2X2X1121
221X121XX22X1121
112XX1XXX1221121
X2X1XX1X21221121
2X21X2121X221121
121X21X21X221121
21X11XX1XX221121
X11X1X2222221121
