X1111221X1XXX21M
X1111221X1X2XX1M
X1111221X12X121M
X111X221X1XX1X1M
X111X221X1221X1M
X111X221X122X21M
X1112221X1X2121M
X1112221X12XXX1M
2111XX211212X212
2111XX2112122212
