X1121111112X1111
22X2XX11112X1111
221212XX112X1111
X1X2X2X2112X1111
21X21211X1221111
X212X1X1X1221111
X2X2111XX12X1111
2112XX1XX12X1111
21X2X1XX11221111
X2121X1211221111
X1121XX2X1221111
22X211X2X12X1111
