11112212111121MM
111X112111122XMM
1X11X1X11X1X21MM
X11121111X12X2MM
X1111XXX121221MM
2X112X21111211MM
1212X11X1112X1MM
1X11212X1211XXMM
1X121X11121122MM
211111X2111X12MM
X211XX22111X2XMM
121X2XX21X1222MM
