1211X111X1221212
1211X1X12122X212
X2XX2111X1221212
X2XX21X12122X212
X2X1X1X1X1221212
X2X1X1112122X212
121X21X1X1221212
121X21112122X212
X21XX11121221212
X21XX1X1X122X212
12X1211121221212
12X121X1X122X212
X2112111X122X212
X21121X121221212
12XXX111X122X212
12XXX1X121221212
1211XX1211221211
1X1111X1X1XX1212
121121XXX2221211
12111XX122221X12
