H,W = map(int,input().split())

S = [list(input()) for i in range(H)]

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

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