1111XX1X111X21MM
1111XX1XXX1X21MM
11112X111X1X21MM
1112XX111X1X21MM
11122X11X11X21MM
11122X1X1X1X21MM
X111XX11X11X21MM
X111XX1X1X1X21MM
X1112X1XX11X21MM
X112XX1XX11X21MM
X1122X11111X21MM
X1122X11XX1X21MM
