import copy

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

for i in range(H):
    for j in range(W-5):
        if now[i][j:j+6] == ['y','i','w','i','y','9']:
            S[i][j+4] = "Y"
        elif now[i][j:j+6] == ['9','y','i','w','i','y']:
            S[i][j+1] = "Y"

for i in range(H):
    print("".join(S[i]))