1X21X111122X1X12
2XX211X1X112X112
X2X111212X1X1212
X11X11X111X12212
X11X111121X12X12
X11X1121X1X12112
111X11X121X12112
111X1111X1X12212
111X112111X12X12
211X11X1X1X12X12
211X111111X12112
211X112121X12212
