11XX111222121121
1121111222X1X221
11XX211212X1X121
1121211212121221
X1XXX11222X11221
X121X1122212X121
X1X12112X211X221
X12X2112X2X21121
21XX1112X2X2X221
21211112X2111121
21X1X11212X21121
212XX1121211X221
