import sys
input = sys.stdin.readline
H, W = map(int, input().split())
S = [list(input().strip()) for _ in range(H)]
flag = 0
cnt = 0
for i in range(H):
    for j in range(W):
        s = S[i][j]
        if flag==0:
            if s=="y":
                flag = 1
                cnt = 1
            elif s=="9":
                flag = 2
                cnt = 1
        elif flag==1:
            cnt += 1
            if cnt==5:
                S[i][j] = "Y"
        else:
            cnt += 1
            if cnt==2:
                S[i][j] = "Y"
        if cnt==6:
            flag = 0
            cnt = 0
for a in S:
    print("".join(a))