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111XX211122XXX12
111XX2X1112XX212
1111X12111211X12
111XX2211X2XX112
X11X12111X2XX212
X111111112211X12
X11111X111211212
X11X12X1122XX112
X11111211X211112
X111X1111X211212
X111X1X112211112
X11XX221112XXX12
21112211112XX112
211X211111211112
211122X11X2XXX12
211X21X11X211X12
21112221122XX212
211X212112211212
