21X2X21X2X111121
X1X22X1211X1X121
212X1212X2X1X121
X11222X1X1112121
2121XXX11X112121
111X22221X11XX21
211121XXX211XX21
2111XX122121XX21
X1XX11X221112X21
21X1221X11X12X21
11XX2X12X2111221
X111X112XXX12221
