X1X1X2X11X21X121
211XX1X1221X1121
11X22X11X1212121
X1221X11XX1X2121
211X22X121X11121
112X11X1XX2X2121
21111X112XX1X121
11X22X11122XX121
1122X2111X212121
21X2X11121XXX121
X1XX1XX112111121
21111XX1X11X2121
X12XX1X1211XX121
21121211XX212121
X12211112X1XX121
11212XX112X12121
111121X122XX1121
21121X111X21X121
1121121112X12121
X1XX21X1X11X1121
21XX21111XX11121
11X21X11X12XX121
X112X2X111X1X121
