// Online C++ compiler to run C++ program online
#include <stdio.h>
#include<iostream>
using namespace std;
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int times;
    scanf("%d", &times);
    while(times--) {
        string str;
        bool done=false;
        int n;
        scanf("%d", &n);
        cin >> str;
        while(!str.empty()) {
            string current="";
            int size=str.size();
            if(str[0]=='L' || str[size-1]=='R') {
                printf("Alice\n");
                done=true;
                break;
            }
            for(int i=1; i<size; i++) {
                if(str[i]==str[i-1]) current=current+str[i];
            }
            str=current;
        }
        if(!done)
        printf("Bob\n");
    }

    return 0;
}