211211111XX11210
21X2X1X1XXX1X210
21X2X1X1XX21X210
212221212X212210
21221111XXXXX210
2112212111X22210
21X2X1X1X1211210
21221121222X2210
2112X1X12212X210
21X2211112X11210
211211X11X21X210
21X221212X1X1210
