21222121X21X11M2
2X22X1111X1121M1
212211X1121111M0
2122X12111111XM0
2122X121121111M0
XXX21122XX2X1121
1211X22X22X2X20M
2122X12X12X11110
21X211112211X1M0
222212X1X212XX21
