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2X1121112X2X1220
2X212X11X12X1220
21X12111212XX220
21112112X22X1X20
21212211XX2X1220
XX112111X22X1221
XX21221XX121X221
X1X1221XX12X1221
X1112X11X221X221
X11122112X21X221
X1212112XX2XX221
21212112X121XX21
