B

#include<bits/stdc++.h>
#define ll long long
#define endl "\n"
using namespace std;
template<class T>
void printff(vector<T>& v) {
  for (auto k : v) cout << k << " ";
  cout << endl;
}
void SOLVE() {
  string s; cin >> s;
  int n = s.length();
  for(int i = 0; i < n - 1; i++){
    if(s[i] == s[i + 1]) return void(cout << "yes" << endl);
  }
  for(int i = 0 ; i < n - 2; i++){
    if(s[i] == s[i + 2]) return void(cout << "yes" << endl);
  }
  cout << "no" << endl;
}
int main() {
  ios_base::sync_with_stdio(false); 
  cin.tie(NULL); 
  cout.tie(NULL);
  int tc = 1; cin >> tc;
  while(tc--) SOLVE();
  return 0;
}