X21X1XX21221X11M
X21X1X11122XX11M
X2111XX1122XX11M
X21X1XX1122XX11M
X2111X12122XX11M
X21X1X12122XX11M
X2111XX2122XX11M
22111XX2122XX11M
X21X1XX2122XX11M
221X1XX2122XX11M
