#include <iostream>
using namespace std;
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int times;
    cin >> times;
    while(times--) {
        string str;
        bool done = true;
        int n;
        cin >> n >> str;
if(str.size()>5000)
        for(int i=0; i<5000; i++) {
            if(str[i]!='R') {
                done=false;
                break;
            }
        }
        if(done) {
            cout << "Alice\n";
            continue;
        }
        done=false;
        while(!str.empty()) {
            string current = "";
            int size = str.size();
            if(str[0] == 'L' || str[size - 1] == 'R') {
                cout << "Alice\n";
                done = true;
                break;
            }
            for(int i = 1; i < size; i++) {
                if(str[i] == str[i - 1]) {
                    current += str[i];
                }
            }
            str = current;
        }
        if(!done) {
            cout << "Bob\n";
        }
    }
    return 0;
}