X121XX1112111X21
X122XXXX12111X21
X121X1112X121121
X122X1XX2X121121
X121X211X11X1221
X122X2XXX11X1221
12X211112X121121
12X212XX2X121121
12X21X1112111X21
12X21XXX12121X21
12X21211X11X1221
12X212XXX1121221
2X1X2211X11X1221
2X1222XXX11X1221
2X1X21112X121121
2X1221XX2X121121
2X1X2X1112111X21
2X122XXX12111X21
