X11XX121X21X1211
X11XXX2122XX1211
2X122121X21X1211
2X122X2122XX1211
2X1XXX21X21X1211
2X1XX12122XX1211
X1122X21X21X1211
X112212122XX1211
2112X121221X1211
2112XX21X2XX1211
XX1X2121221X1211
XX1X2X21X2XX1211
211X2121X2XX1211
211X2X21221X1211
XX12X121X2XX1211
XX12XX21221X1211
