211111211XX11X12
2111X1211X211X12
211111X112X11212
2111X1X112211212
2111XX2111X11X12
21111XX11X2X1212
2111XXX11XX21212
21111X21122X1X12
2111XX2112X21X12
2111X2X111XX1X12
2111X22111XX1212
211112X111221X12
2111122111221212
