11X12111121X2221
112121X112111121
112121XX211X2221
1XX121XX21111121
1X21211X21111121
1X2121X1121X2221
21X1211X21111121
21X121X1121X2221
21212111121X2221
2XX1211121111121
2XX1211X121X2221
2X2121XX21111121
11X12121XX111X21
11XX21X121111X21
112121X1XXX1X221
1XX121X1XX111X21
1XXX212121X1X221
1X2X212121111X21
1X2X212121X1X221
