#include <bits/stdc++.h>

#define int long long

using namespace std;

signed main() {
    ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
    int t;
    cin >> t;
    while(t--){
        int n, m;
        cin >> n >> m;

        int idx = 0, k = 0, mx = 0;
        vector<string> v(n);
        for(int i = 0; i < n; ++i){
            cin >> v[i];
            for(int j = 0; j < m; ++j){
                if(v[i][j] == '#'){
                    ++k;
                }
            }
            if(mx < k){
                mx = k;
                idx = i;
            }
            k = 0;
        }
        k = 0;
        for(int i = 0; i < m; ++i){
            for(int j = 0; j < n; j++){
                if(v[i][j] == '#'){
                    k++;
                }
            }
            if(k == mx){
                cout << idx + 1 << ' ' << i + 1 << '\n';
                break;
            }
            k = 0;
        }
    }
}