#include<bits/stdc++.h>
using namespace std;
#define int long long
void solve() {
    string s; cin >> s;
    stack<char> st;
    auto win = [&](char A, char B) -> bool {
        if (A == B) return true;
        return (A == 'S' && B == 'P') || (A == 'P' && B == 'R') || (A == 'R' && B == 'S');
    };
    for(int i = 0; i < s.length(); ++ i) {
        while (st.size() != 0 && win(s[i], st.top()))
            st.pop();
        st.push(s[i]);
    }
    char ans = 'R'; while (st.size()) ans = st.top(), st.pop();
    cout << ans << "\n";
    return;
}
signed main() {
    ios::sync_with_stdio(false);
    cout.tie(0), cin.tie(0);
    int T = 1;
    cin >> T;
    while(T--) {
        solve();
    }
    return 0;
}