1X1X1111X111XX11
X2X21X111111X221
X2121XX121111X11
XX1X111X21112210
12121X11XXX12221
1X1111X11X11X211
111X1X1X11X1XX10
12XX11112X111X11
XXX21111X1X1X110
221X12XXX111X221
XX121X1XXX111X10
1XXX1XX111112111
2211111121X1XX21
XX1X121111X11211
11X2121X2111XX11
