2112111211221111
X112XXX1212X1121
1X12122XX1221120
2112XXX2X1221121
XX12121X21221121
21122X2211221121
2XX2X2XX2X2X1111
2X1211221X221110
11222X12X12X1121
2122222211221110
21121X12X1221121
