2XX2X12212111111
2XX21X2212111111
2XX2X12112121111
2XX21X2112121111
21X2X1221211X111
21X21X221211X111
21X2X1211212X111
21X21X211212X111
2XX2X12112112111
2XX21X2112112111
21X2X12X12112111
21X21X2X12112111
21X2X121121X2111
21X21X21121X2111
