X111X1XXXX21X221
X11X2X2X1XX11X21
X1X12XXX1X21XX21
X1XXX12XXXX11221
XX11212XXXX1XX21
XX1XXXXX1X211221
XXX1XX2X1XX1X221
XXXX21XXXX211X21
2111XX2XXX211X21
211X21XX1XX1X221
21X1212X1X211221
21XXXXXXXXX1XX21
2X112XXXXXX11221
2X1XX12X1X21XX21
2XX1X1XX1XX11X21
2XXX2X2XXX21X221
