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21X12121X2X11221
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211121X1X111X221
2XX12122X1111221
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2X212111X111X221
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2X2121112XX11221
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212121XX22X11221
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2X11211X11X11221
1X1121XX2X211X21
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1XX121XXX2211221
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112121XX1X111221
21112X121X111221
