X211X1121121X120
X211X1121X21X120
X211X112X121X120
X211X112XX21X120
X21XX1121121X120
X21XX1121X21X120
X21XX112X121X120
X21XX112XX21X120
2121X1X212X211M2
11X111X212121XM2
111X11X21X1121M2
111XX1X21X1121M2
