2X121121211XX11M
11XXX11111X1111M
X2111121XX21221M
212X11X11X22XX1M
11111XX122111X1M
2X21X1X1X2XX121M
1122XX21X12X2X1M
1XX1XX211X12X21M
X2221X2112X2111M
XXXX1X112XXX2X1M
