XX1X211121X1XX21
1XX121X12XX1XX21
X1XX21X12111XX21
1XXX21112111XX21
111121112X11XX21
XX1121X12111XX22
1XX1211121111222
1X1121X121111222
1X1121112X111222
1XX121X12X111222
11XX21112XX1X2M1
XXXX21X121X1X2M1
X11121X12XX1X2M1
1111211121X1X2M1
1X11211121X1X2M1
X11X21112111X2M2
1X1X21X12X11X2M2
11X121X12111X2M2
XXX121112X11X2M2
1X2121212211X2M2
