1111XX111X1X1X21
1211XX11122X1221
12X1X11111XX1X21
1121X21112121221
X111X11112221221
X1X1X2111XXX1X21
X2X1X2111X121221
X221XX11111X1X21
2211X2111X111X21
21X1XX111X111221
2121X1111X2X1X21
2221X11112111221
