11111X1221121121
1111121X11121221
1X22112X11121121
12112X1X11211121
12211X1X11X21221
X111X11121221121
X1211XX111221221
X1212222X1111121
XX21212X11112121
XX22112X11121121
X2X11X1112121121
X221211X2111X121
2X211X1211121221
