11X21X112XX12121
11X21XX1X1112121
11X2X1X12XX12121
112211X12XX12121
1122X111X1112121
1122XXX12XX12121
X1X21111X1112121
X1X21XX12XX12121
X1X2XX11X1112121
X1221X11X1112121
X122X1112XX12121
X122X1X1X1112121
