1121112211111111
1121112211112111
212121X211111111
212121X211112111
2121112211X11111
2121112211X12111
11X1212211X11112
11X1212211X12112
11X111X211X11112
11X111X211X12112
11X121X211X11112
11X121X211X12112
21X1112211121121
21X1112211122121
21X1212211121121
21X1212211122121
21X111X211121121
21X111X211122121
112121X211121122
112121X211122122
1121112211X21122
1121112211X22122
