/*
 *Copyright (c) Swadheen Islam Robi (SIR01)
 *Created on Sun Aug 31 2025 3:23:15 AM
 */
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pie 2 * (acos(0.0))
#define yes cout << "YES\n"
#define no cout << "NO\n"
#define pb push_back
#define endl "\n"
#define lcm(a, b) (a * b) / (__gcd<ll>(a, b))
#define mod 1000000007
#define srt(v) sort(v.begin(), v.end())
#define rsrt(v) sort(v.rbegin(), v.rend())
#define ALLAHU_AKBAR             \
    ios::sync_with_stdio(false); \
    cin.tie(nullptr);
char a[12] = {'I', 'E', 'L', 'U', 'S', 'B', 'C', 'H', 'A', 'P', 'T', 'R'};
map<char, ll> chk;
void sir()
{
    string s;
    cin >> s;

    map<char, ll> mp;

    for (auto c : s)
        mp[c]++;

    for (ll i = 0; i < 12; i++)
    {
        char c = a[i];
        if (c == 'E' && mp[c] < 4 || (!mp[c]))
        {
            cout << -1 << endl;
            return;
        }
    }
    // two pointer
    ll i = 0, j = s.length() - 1;
    ll one = 0, two = 0;
    while (i <= j)
    {
        char c = s[i], c2 = s[j];
        if (chk[c] > 0)
        {
            if (chk[c] > 0 && mp[c] > chk[c])
            {
                i++;
                mp[c]--;
            }
            else
                one = 1;
        }
        else
            i++;

        if (chk[c2] > 0)
        {
            if (mp[c2] > chk[c2])
            {
                j--;
                mp[c2]--;
            }
            else
                two = 1;
        }
        else
            j--;
        if (one && two)
            break;
    }

    cout << j - i + 1 << endl;
}

int main()
{
    ALLAHU_AKBAR
    for (ll i = 0; i < 12; i++)
    {
        if (a[i] == 'E')
            chk[a[i]] = 4;
        else
            chk[a[i]] = 1;
    }

    ll t = 1;
    cin >> t;
    while (t--)
    {
        sir();
    }
    return 0;
}