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X12X2X1X22111121
1121XX12121X1111
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212X211XX111X111
2X2XX1122211X111
112XX212X1111X12
2X22111X21111X22
2X22X1111X111X22
2X212X121X111X22
11222211XX111X11
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X122221X111X1X21
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2121X11X221X1X22
21221X111211XX22
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2X22X11211111222
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212XX2111211X212
