1X1111X1XX111121
1X11X1X1X21XX121
1X11X1X1X2X11X21
121111X1XX1X1X21
121111X1XXX1X121
1211X1X1X2XXXX21
XX1X11XXXXXXXX21
XX1X11XXX211XX21
XX1XX1XXXXXX1121
X21X11XXX2XX1121
X21XX1XXXX11XXM1
X21XX1XXX21111M1
2X1211X2X2XX11M1
2X12X1X2XX11XXM1
2X12X1X2X21X1XM1
2X12X1X2X2X1X1M1
221211X2XX1XX1M1
221211X2XXX11XM1
221211X2X211XXM1
2212X1X2XXXX11M1
