#include<stdio.h>
 
#include<iostream>
#include<string.h>
 
using namespace std;
 
 
int main()
{
 
    int t;
    cin>>t;
getchar();
    while(t--)
    {
        int l,cnt,i=0,flag;
        char s[51];
        gets(s);
        l=strlen(s);
        while(i<l)
        {
            cnt=1;
            flag=0;
            for(int j=i-1; j>=0; j--)
            {
                if(s[j]==s[i])            // TO FIND WHETHER A LETTER IS ALREADY CHECKED OR NOT
                {
                    flag++;
                    break;
 
                }
 
            }
 
            if(flag==0)
            {
 
                for(int j=i+1; j<l; j++ )
                {
                    if(s[j]==s[i])          //IF PROGRAM REACHES HERE THAT MEANS A LETTER IS BEING CHECKED FIRST TIME
                        //AND SAME TYPE OF LETTERS CAN EXSIST ONLY LATER THAN THE CURRENT VALUE OF i
                        cnt++;
                }
 
                if((l-cnt)==cnt)
                {
 
                    cout<<"YES\n";
                    flag=-1;
                    break;
 
 
                }
 
            }
 
            i++;
        }
 
 
        if(flag!=-1)
            cout<<"NO\n";      //IF PROGRAM REACHES HERE THAT MEANS CONDITION IS FALSE
 
    }
    return 0;
}
 

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