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11X1111X121211MM
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X121111X1211X1MM
111X1111121X11MM
11X111111211X1MM
21XX1111121211MM
21211111121XX1MM
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11XX111X121111MM
1111111X121XX1MM
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21211111121X11MM
21X11111121211MM
11X1111X121111MM
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