1X11111X1X111121
X21X2XX21X111121
X211111XX2121121
1X1X2XX2X2121121
1X1X211XXX111121
X2111XX2XX111121
XX1X111X12121121
12112XX212121121
121X111X1X111121
XX11211X1X111121
XX111XX2XX111121
121X1XX21X111121
X211211XXX111121
11111112X2111121
X211XX22X21XX121
22112112X2122121
21112X22X2122121
12111112X2111121
X111X112X21XX121
