21XX1X1212212112
21XX122111212112
21X21XX112212112
21X21X2121212X12
21X21111X1212112
211X1XXX12212112
211X11211X212X12
21111XX122212112
2111121112212112
211211X211212X12
2112112X12212X12
21121211XX21X112
2112121112212112
211212112X212112
212X1X2X12212112
2122121X12212112
212212111221X112
2122121121212112
21221212X1212112
21XX1XXXX2212122
21XX12X122212122
21X211X1X2212122
211X111X1X212X22
211X112X12212122
21111X211X21X122
21111111XX212X22
21111111X2212122
2112111112212122
211211122X21X122
212X11122X21XX22
212211112X21X122
