21211XX11X12121M
112X1X211X1X121M
21212XX1X1121X1M
11212XX1121X121M
11212XX21X11121M
21X121X11X1X121M
112111X1XX12121M
X1221XX11X21121M
1121X1211X12121M
X1211121XX1X121M
