#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b) for (int i = a; i < b; i++)
using ll = long long;

int main(){
	int h, w;
	cin >> h >> w;
	vector<string> s(h);
	rep(i, 0, h) cin >> s[i];
	rep(i, 0, h) rep(j, 0, w) {
		if(s[i][j] == '9') {
			int f = 0;
			if(j - 1 >= 0 && s[i][j - 1] == 'y') {
				if(j - 5 >= 0 && s[i][j - 5] == 'Y') ;
				else {
					s[i][j - 1] = 'Y';
					f = 1;
				}
			}
			if(f == 0 && j + 1 < w && s[i][j + 1] == 'y') {
				s[i][j + 1] = 'Y';
				j += 6 - 1;
			}
		}
	}
	rep(i, 0, h) cout << s[i] << endl;
}