11212121111X1111
112X1XX1111X1111
1221112212121111
21211121111X1111
212X2XX212121111
222X2XX1111X1111
222X2XX212121111
X1112121111X1X12
X11X1XX1111X1X12
XX11112211X21X12
21111121111X1X12
211X2XX211X21X12
2X1X2XX1111X1X12
2X1X2XX211X21X12
