21212X2121211201
21X1212XX1211222
2X21212X11211210
2111212X22211212
2X112X211X211211
21X12X2112211221
21X121212X211212
2X11212212211211
21112122XX211211
21212121X2211201
22X1212211211221
2121222211211210
2111222X1X211201
2211212121211201
