#include <iostream>
#include <string>
using namespace std;
int main () {
int t; cin>> t;
while (t--) {
string s;
cin >> s;
bool diff=false;
for (int i=0; i<s.length(); i++) {
if (s[i]!=s[i+1]) {
diff=true;
break;
}
}
if (diff)
cout << "Yes" << endl;
else
cout << "No" << endl;
}
}
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