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1111X1111X1XXX12
1111X11XX11X1X12
1111X11XXX11X112
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111121112112X112
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11XX111XX1111112
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11XX2111X212XX12
11XX211X2X121X12
11XX211X221XX112
1122111X1112X112
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112211112111XX12
1122X111XX121X12
1122X111X21XX112
1122X11X2X1X1112
1122211111111112
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