21X21112211X1X22
212211X1212X2221
21221X2X21XX2222
11XX11212121XX21
X222112X21X12111
2222X1X121221112
XX2211X1X12X2222
222211X121X12211
2XX211XX211X2X12
11X21XX121122212
1XX21XX2X11X2X12
1X121XX2X11X2212
1X221X1221222221
