221121X112212221
22112XX1X221X221
221121X122212221
1X11212XX12X2111
X2112121X12X2111
2X11212XX12X2111
11X12112211X2120
1XX1X1XX1X1X2120
XXX1X1XX1X1X2120
X2X1X12X121X2120
X2X12122221X2120
