#include<iostream>

#include<string>

#include<cmath>

#include<algorithm>

using namespace std;

int main(){

    int t, cnt, sum;

    char str[200005];

    cin >> t;

    while (t--){

        scanf("%s",str);

        sum=cnt = 0;

        int len = 0;

        len = strlen(str);

        for (int i = 0; i < len+1; i++){

            if (str[i] == 'L'){

                cnt++;

            }

            else{

                sum = max(sum, cnt);

                cnt = 0;

            }

        }

        cout << sum+1 << endl;

    }

    return 0;

}