#include <bits/stdc++.h>

using namespace std;

void solve() {
    string s;
    cin >> s;
    vector<char> sta;
    map<char, int> mp;
    mp['R'] = 0, mp['S'] = 1, mp['P'] = 2;
    auto cmp = [&](char x, char y) {
        if (x == y) return 0;
        if ((mp[x] + 1) % 3 == mp[y]) return 1;
        return -1;
    };
    for (int i = 0; i < s.size(); ++i) {
        while (sta.size() && cmp(sta.back(), s[i]) == -1) {
            sta.pop_back();
        }
        sta.push_back(s[i]);
    }
    cout << sta[0] << "\n";
}

int main(void) {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1;
    cin >> t;
    while (t--) {
        solve();
    }
    return 0;
}