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112X21XX1122X121
1122X11XXXXX2121
121X211XXXX2X121
1212X1XX112X2121
122XX1XXX1X22121
1222211X1X2XX121
211XX1XXXX2XX121
2112211X11X22121
212X211XX12X2121
2122X1XX1XX2X121
221X21XX1XXX2121
2212X11XX122X121
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