X11221X121X2X221
211X21X12XX2X221
X112X12XXX1X1211
X112X12XX21X1211
X112212XXX1X1211
X112212XX21X1211
2112X12XXX1X1211
2112X12XX21X1211
2112212XXX1X1211
2112212XX21X1211
X11221X1XX1XX211
X11221X1X21XX211
