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2X21212121X11112
2X211111X22X1112
11212121222X1112
21212111X2X12X12
1X21112122X12X12
1X212111X12X2X12
21211121212X2X12
11211121X1212112
2X21211121212112
2X211121X2XX2112
1121211122XX2112
21212121X2211X12
1X21111122211X12
