1X21X12112121212
12XXX1X1X2121212
X121X1XX221XXX12
2111X1X2121X2X12
1122X11112121112
122XX12111122112
1X12X1X1X21X1112
21X1X1X1221X1112
1221X11211121X12
X121X12X1X121X12
1121X1112X1XX112
21XXX111XX1X2112
1121X12X12121212
1212X11XX2121212
12X1X1X12X121X12
2X21X1X1XX122X12
XXX1X1XXXX1XXX12
