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2X22112121112211
2X22112X21XX2211
2X2X11XX21112211
2X2X11X121XX2211
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212211X121X12211
212211XX211X2211
XX2X112121X12211
XX2X112X211X2211
212X1121211X2211
212X112X21X12211
XX2211X1211X2211
XX2211XX21X12211
