X11X21112221211M
111112112221221M
X11X111222212X1M
1111211222112X1M
111X22122211211M
X11122122211221M
1111221122211X1M
X11X21122221121M
111112122221111M
111X11112211121M
X11111112211111M
X11X121122111X1M
