1X11211X11X1X1MM
1X11211X1XXX21MM
X21X211211X1X1MM
X21X21121XXX21MM
X211211X1XX1X1MM
X211211X11XX21MM
1X1X21121XX1X1MM
1X1X211211XX21MM
XX1X211X11XXX1MM
XX1X211X1XX121MM
1211211211XXX1MM
121121121XX121MM
XX11211211X121MM
XX1121121XXXX1MM
121X211X11X121MM
121X211X1XXXX1MM
