1X21X1X12211X121
12212121X211X121
122XX1X1X2112121
XX2121212X11X121
XX2X21X1XX112121
X22XX1212X112121
1X2XX121XX11XX21
1X2X212122112X21
122121X12X112X21
XX21X121X2112X21
X221X1X1XX11XX21
X22X21X12211XX21
1X21X121XX112221
1X2121X1X211X221
1221X1212211X221
122X21X12X11X221
XX2XX1X12X112221
XX2XX121X211X221
X22121X122112221
X22X2121XX112221
