211121X1X2X1X120
11XX1X22111X1220
X1X1X2X1X2X11220
XX21212X1X112X20
X1X21XX11X121220
X1X221212XX11X20
X1X12XX21121XX20
1X21X221X2XX1220
21X1X121X2112220
112X2XX211211120
