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21XX12112X121112
212X1X112X121112
112X12112X121112
11X11X112X121112
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11X111112X121112
21XX2X112X121112
11XX22112X121112
112X2X112X121112
11XX1XXX2X121112
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112X1X1122121112
11XX2X1122121112
11XX1XX12X221112
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11X11X112X111112
11XX1XX12X121X12
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11XX1X112X221X12
