X1121X1211221111
X1121XX2X1221111
X1X21112X1221111
XX121112X1221111
XXX211X211221111
XXX21X12X1221111
211211X211221111
21121X12X1221111
21X21XX211221111
2X121XX211221111
2XX2111211221111
2XX211X2X1221111
X1X21112X1221112
X1X21112XX221112
X1X2X112X1221112
X1X2X112XX221112
21X21112X1221112
21X21112XX221112
21X2X112X1221112
21X2X112XX221112
