121X1111XX111120
X2121XXXXX111120
X212111122X11120
121X1XXX22X11120
X21X1X112X1XX120
121211XX2X1XX120
12121X11X2XXX120
X21X11XXX2XXX120
121X11X1X21X1120
X2121X1XX21X1120
X21211X12XXX1120
121X1X1X2XXX1120
X21X1XX12211X120
1212111X2211X120
