XX112XX11XX11211
2X212X11X11X1221
12X12121X1X11222
X2X121111X21X211
21212XX121111222
XX1121211X11X221
2XX12111XX2X1211
12212XX1X1X11221
X1X12XXX1X21X222
21212X1XX1111221
12X121X12XX11211
2X112111X1XX1211
1XX12111XXX11221
X1112XXXX1X1X222
11X1211XX11X1221
21112XX11X111222
XX21211121X1X211
