h,w = map(int,input().split())
for j in range(h):
  t = list(input())
  for i in range(w):
    if t[i]=="y":
      if 0 <= i-1 and t[i-1]=="9":
        t[i] = "Y"
      if i+1 < w and t[i+1] == "9":
        t[i] = "Y"
  print("".join(t))