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