11X1X1X211121112
1XXX211211121112
1X21X112X1121112
X1XX21XX11121112
X12XX11XX1121112
XX2121XXX1121112
1121211X1X121112
112X21X2XX121112
1XXXX1XXXX121112
X1X12112XX121112
XXX1X11X1X121112
XX2XX1X21X121112
11X1211XX2121112
11XXX11212121112
1XX121X212121112
1X2XX1XX12121112
X121X1XXX2121112
X121211212121112
XXXXX1X2X2121112
XX2X211XX2121112
