1X12XX21XXXX1221
21X2X1X1X112X211
21XX11112X111221
2112XX21X21X1210
1X12XX21X112X211
1X12XX212X111221
1X12XX21X21X1210
21X2X1X1XXXX1221
21X2X1X12X111221
21X2X1X1X21X1210
21XX1111XXXX1221
21XX1111X112X211
21XX1111X21X1210
2112XX21XXXX1221
2112XX21X112X211
2112XX212X111221
