#include<bits/stdc++.h>
using namespace std;
int n,T;char ans;string s;
bool cmp(char x,char y){
    return x=='R'&&y=='S'||x=='S'&&y=='P'||x=='P'&&y=='R';
}
void solve(){
    cin>>s;n=s.length();
    for (int i=0,ret=0;i<n;i++){
        if (!i||cmp(s[i-1],s[i])) ret++;
        else if (cmp(s[i],s[i-1])) ret=max(ret-1,1);
        if (ret==1) ans=s[i];
    }
    printf("%c\n",ans);
}    
int main(){
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>T;while (T--) solve();
    return 0;
}