#include <bits/stdc++.h>
#include <atcoder/all>
using mint = atcoder::modint998244353;
using namespace std;

int main() {
	int w, h;
	cin >> w >> h;
	atcoder::dsu uf(w);
	vector<int> a(w, -1);
	bool ok = true;
	while (h--){
		string s;
		cin >> s;
		for (int i = 0; i < w; i++){
			if (isdigit(s[i])){
				if (a[i] != -1 and a[i] != (s[i] - '0')){
					ok = false;
					break;
				}
				a[i] = s[i] - '0';
			}
		}
		if (!ok){
			cout << 0 << endl;
			continue;
		}
		for (int k = 0; k < 26; k++){
			set<int> t;
			for (int i = 0; i < w; i++){
				if (s[i] == (char)('a' + k)){
					t.insert(i);
				}
			}
			vector<int> l(t.begin(), t.end());
			for (int i = 0; i < max(0, (int)l.size() - 1); i++){
				uf.merge(l[i], l[i + 1]);
			}
		}
		mint ans = 1;
		auto g = uf.groups();
		for (auto t : g){
			set<int> p;
			for (int i = 0; i < (int)t.size(); i++){
				if (a[t[i]] != -1){
					p.insert(a[t[i]]);
				}
			}
			if (p.size() > 1){
				ok = false;
			}
			if (p.size() == 0){
				ans *= 10;
			}
		}
		if (!ok){
			cout << 0 << endl;
			continue;
		}
		cout << ans.val() << endl;
	}
}