X1X2X21XX11X1X11
XX1X1X2X1X1XXX12
1X1X2X2XX112XX12
2XXXX2X1XXX21112
X112XXXX22X21121
2XXX222122X2X121
21XX1XXX21121221
X1X2121X12XXX222
11XX2X1122XXX122
211222X111XXXX22
X1X2X21112121211
X1X212X1121X1X11
X112X2XX12121111
X112X21XX2121X11
X11212X1121X1212
X1X212XXX21X1X21
X1X2X21X12121222
X1X212XX121X1222
X112X2XXX21X1222
X112X2X1X21X1222
11122X1X222X2211
11122X1X222X1211
