func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     int div[] = {1, 2, 3, 4, 6, 12};     while (t--) {       string s;       cin >> s;       vector<pair<int, int> > dimen;       int n, m;       int i, j, k;       for (k = 0; k < 6; k++) {         n = div[k];         m = 12 / n;         for (j = 0; j < m; j++) {           for (i = 0; i < n; i++) {             if (s[i * m + j] !=  X ) break;           }           if (i == n) {             dimen.push_back(make_pair(n, m));             break;           }         }       }       cout << dimen.size() <<    ;       for (int i = 0; i < dimen.size(); i++)         cout << dimen[i].first <<  x  << dimen[i].second <<    ;       cout << endl;     }     return 0;   }   