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X2111XX212X11121
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X21221X212XX1221
1X1XX11X11X11X21
1X111XXX1X211X21
111XX1XX1X211121
1111XX1211XX1221
1111X1X212X11121
11112X1X11XX1X21
1111211211X11221
121221X2112X1221
XX1111121XXX1XM1
XX121X1X112X12M1
X21X211X1X2X1XM1
1X1XX1XX12X112M1
111XX1XX1X2X1XM1
121X11121X2X11M1
