111221XXXXX21211
1X12222122221211
1X1222XX1XX21211
12122X2222221211
X112222222221211
XX122XXXXXX21211
X21221X1XXX21211
X212212212221211
21122XX11XX21211
21122X2112221211
2X12212222221211
221222XXXXX21211
