111121X212121X11
11X122XX1X111X11
X12122X21X111X12
XX1121XX12111X12
1XX122X212111X1M
XXX121XX1X121X1M
1X2122X21X121X21
X21122XX12121X21
X2X121X212121X22
122121XX12121X22
122121X21X111X2M
12211XX1X1212112
