X1111111X12X121M
21111111X12X121M
X1X11111X12X121M
21X11111X12X121M
X1112111X12X121M
21112111X12X121M
X1X12111X12X121M
21X12111X12X121M
X1111121X12X121M
21111121X12X121M
X1X11121X12X121M
21X11121X12X121M
X1112121X12X121M
21112121X12X121M
X1X12121X12X121M
21X12121X12X121M
