1XXX122121XX1120
1121X221X1111X20
X11112X121221220
XX1112X111X21221
XX1112X121221221
X11X12X1112X1121
211112X111X212M0
21XX121121X21XM0
21XX121121X21XM0
21XX122121XX1XM1
21X1121121X211M1
2121X221111X12M1
