111212X11XX21X1M
111212X11X22121M
111212X211X2121M
121212X111X2121M
121212X211221X1M
121212X21XX2121M
X11212X111221X1M
X11212X11XX2121M
X11212X21X221X1M
X21212X11X221X1M
X21212X211X21X1M
X21212X21122121M
