XX12X12X22X11212
121XX21X111X2X21
X112X2XX2X111211
XX1X21X1XX111221
X21X21X12XX11221
X21X21XXX2111221
X21X21X12XXX1221
X21X21XXX21X1221
XX1X21XX22X11221
X21X2121X2X11221
X21X212X2X111221
X21X2121X2XX1221
X21X212X2X1X1221
2X1X21X1X2X11221
2X1X21XX2X111221
221X2121XX111221
2X1X21X1X2XX1221
2X1X21XX2X1X1221
221X2121XX1X1221
2X1X21212XX11221
221X21XXXXX11221
2X1X21212XXX1221
