세화여중 배서영

X=`s 4u 4d` Y=`l 4u 4d` Z=`t 4u 4d` A=`r 4u 4d` doit(7s 6l 6t 5r s 5X 4Y 4Z 3A 4u s u 2s 2l 2t r s u) beginxyz;item= 16