X21X1111112X2212
X21X12X212X11112
X21211X211XX2112
X212121112211212
X2XX11X112212112
X2XX121211XX1212
X2X2111212X12212
X2X212X1112X1112
221X1112122X1112
221X12X111X12212
221211X112XX1212
2212121211212112
22XX11X211211212
22XX121112XX2112
22X2111111X11112
22X212X2122X2212
