#include<iostream>
#include<cstdio>
#include<algorithm>
#include<map>

#define ll long long
#define endl "\n"
using namespace std;

ll t,n,a[1000005];
string s;
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr), cout.tie(nullptr);
    map<char,int>ch;
    ch['S']=0,ch['P']=2,ch['R']=1;
    cin>>t;
    while(t--)
    {
        cin>>s;
        ll maxn=0;
        s=' '+s;
        char ans=s[1];
        a[1]=0;
        for(int i=2;i<s.length();i++)
        {
            if((ch[s[i-1]]+1)%3==ch[s[i]])
            {
                a[i]=a[i-1]+1;
            }
            else if(s[i]==s[i-1])
            {
                a[i]=a[i-1];
            }
            else
            {
                a[i]=a[i-1]-1;
            }
            if(a[i]>maxn)
            {
                maxn=a[i];
                ans=s[i];
            }
        }
        cout<<ans<<endl;
    }
}