2121221112112121
2111122212112121
X1X1XXXX1211X111
2111112X12112121
21X1XXX2121XX122
2X2122X1X2112111
X1211X1X12112121
2X11X2211X1121M1
X111121X11112121
2XX12X22121X2120
X1211XXX1X1XX122
