A. Garland.cpp

#ifdef DEBUG
#include "debug.h"
#endif // DEBUG
#ifndef DEBUG
template <typename T>
void debug(T &x){}
template <typename T>
void debug(T &x, int i, int j){}
#endif // DEBUG

#include <bits/stdc++.h>

using namespace std;

bool allSame(string &s){
    for(char c : s){
        if(c != s[0]) return false;
    }
    return true;
}

bool threeSame(string &s){
    if(s[0] == s[1] && s[1] == s[2]) return true;
    if(s[1] == s[2] && s[2] == s[3]) return true;
    return false;
}

int main(){
    cin.tie(nullptr), ios::sync_with_stdio(false);
    int T;
    cin >> T;
    while(T--){
        string s;
        cin >> s;
        sort(s.begin(), s.end());

        if(allSame(s)) cout << "-1\n";
        else if(threeSame(s)) cout << "6\n";
        else cout << "4\n";
    }
}