func_code_string: #include <bits/stdc++.h>   using namespace std;   #define ll long long            int main()   {          ios_base::sync_with_stdio(false);       cin.tie(NULL);       int t;       cin >> t;       int n, k;       while (t--)       {           char a[3] = { a , b , c };           cin >> n >> k;            int temp = k;            while(k--) {               cout<<a[0];           }           int i = 1;           n = n - temp;           //cout << n;           while(n--) {                              if(i == 3){                   i = 0;               }               cout<<a[i];               i++;           }              cout << endl;       }          return 0;   }