111211121X1X1221
XX1211121X1X1221
21121112XX1X1221
1X121112XX1X1221
X11211121X1X1221
2X1211121X1X1221
11121112XX1X1221
XX121112XX1X1221
211211121X1X1221
1X1211121X1X1221
X1121112XX1X1221
2X121112XX1X1221
