1X121X12X12211M1
1X121XX1112X11M1
1XX211X2X12211M1
121211X2X12211M1
12X21111112X11M1
12X21XX2X12211M1
2X121111112X11M1
2X121XX2X12211M1
2XX21X11112X11M1
22121X11112X11M1
22X21112X12211M1
22X211X1112X11M1
