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111X21111X112121
111X2X1X1111X121
111X2X1X1X212X21
111X2X1XXX112221
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111X2X1XX1X1XX21
111X211X2XX1X121
111X211X21212221
111X2X112X21X221
1112X11111X12221
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1X112X111XX12221
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121XX11121X12121
121X2X1X12212221
12122X1X11X12121
12122X1X12212221
