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X11X12X2121XX11M
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111X22X2XX12X21M
121X1XX2XX12X11M
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X11112X212X2111M
12111X12X2X2X11M
121X1XX212XX121M
12111X121XX2121M
121112121X1X111M
12111212XXX2X11M
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12111X121X12111M
X1111XX2X2XX121M
X11112121XX2X11M
111X1212XX1XX21M
121112X212XX111M
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12111XX21XXX121M
X2111212121X111M
