2X1X11X2111X1221
2X1X11X2X1121221
2X1X112X11121221
2X1211XX11121221
2X12112XX11X1221
2X12112211121221
221X11XXX11X1221
221X11X211121221
221X1122X11X1221
221211X2X11X1221
2212112X111X1221
2212112XX1121221
