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11X1221212121211
X121X21222X21211
11X1XX1222X2X211
11211X1212X2X211
X1X12X1212X2X211
11X1XX1212121111
X1212X1222X21111
11X1121212X21111
112122122212X111
X1X112122212X111
X121X2121212X111
