1111111121212222
111111XXX1111222
1112111XX2212222
1112111X21111122
112111X1X2211222
112111X121112122
1122111122211122
112211XXX2112122
X111X1XX22211122
X112X1X1X1212122
X121X11X22112222
X122X111X1111222
X1112111X2111122
X11221X122112222
X121211XX1212122
X12221XX21211222
2111X111X2112122
2112X1X122111222
2121X11XX1211122
2122X1XX21212222
211121XX22212122
211221X1X1211122
2121211X22111222
21222111X1112222
