H,W = map(int,input().split())
S = [list(input()) for _ in range(H)]

for x in range(H):
    for y in range(1,W-1):
        if S[x][y] == "y":
            if S[x][y+1] == "9":
                S[x][y] = "Y"
            if S[x][y-1] == "9":
                S[x][y] = "Y"

for s in S:
    print("".join(s))