0fP(65)t(i,8)(j,12)dt(i,-4)(l,15)dt(k,12)(l,4)dt(i,3)(l,7)AdrrdtkkkkkkkjjjjjjCrrzdrrdtlllldrrCrrdtkkkkklllllllz5fP(16)1draCRtiiiildtkkkkkkldtkkjjjjAsk::======fxyy