11X1X12XX1X11121
11X1X12XX1X1XX21
11X1X12X21111X21
11X1212XX1111X21
11X1212X2111X121
11X1212X21X11X21
1XX1X12XX111X121
1XX1X12XX1X11X21
1XX1X12X21X1X121
1XX1212XX1X1X121
1XX1212X21111121
1XX1212X2111XX21
