func_code_string: #include <bits/stdc++.h>   using namespace std;   string str;   const long long MOD = 1e9 + 7;   template <class T>   inline void amin(T &x, const T &y) {     if (y < x) x = y;   }   template <class T>   inline void amax(T &x, const T &y) {     if (x < y) x = y;   }   int read() {     long long s = 0, f = 1;     char c = getchar();     while (c <  0  || c >  9 ) {       if (c ==  - ) f = -1;       c = getchar();     }     while (c >=  0  && c <=  9 ) {       s = s * 10 + c -  0 ;       c = getchar();     }     return s * f;   }   long long Pow(long long a, long long b) {     if (a == 1 || b == 1) return a;     if (b % 2 == 1) return (a * Pow(a, b - 1)) % MOD;     return (Pow(a, b / 2) * Pow(a, b / 2)) % MOD;   }   long long factorial(long long n) {     long long ans = 1;     while (--n) ans = (ans * (n + 1)) % MOD;     return ans;   }   vector<bool> b(12, 0);   bool binod(int k) {     bool arr[13][13];     memset(arr, 0, sizeof(arr));     int a = 0;     for (int i = 0; i < k; i++)       for (int j = 0; j < 12 / k; j++) {         arr[i][j] = b[a];         a++;       }     a = 0;     bool d;     for (int j = 0; j < 12 / k; j++) {       d = 1;       for (int i = 0; i < k; i++) {         if (!arr[i][j]) d = 0;       }       if (d) return 1;     }     return 0;   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     int t;     cin >> t;     while (t--) {       for (int i = 0; i < 12; i++) {         char sign;         cin >> sign;         if (sign ==  X )           b[i] = 1;         else           b[i] = 0;       }       vector<int> v;       if (binod(1)) v.push_back(1);       if (binod(2)) v.push_back(2);       if (binod(3)) v.push_back(3);       if (binod(4)) v.push_back(4);       if (binod(6)) v.push_back(6);       if (binod(12)) v.push_back(12);       cout << v.size() <<    ;       for (int i = 0; i < v.size(); i++) {         cout << v[i] <<  x  << 12 / v[i] <<    ;       }       cout <<   n ;     }     return 0;   }   