X1XX11X11X111120
2X2X11X11X111120
21X211211X111120
XX2211211X111120
XXX211XX1X111120
212211XX1X111120
2XXX112X1X111120
X12X112X1X111120
2XX211X112111120
X12211X112111120
XXXX112112111120
212X112112111120
21XX11XX12111120
XX2X11XX12111120
