#include <bits/stdc++.h>
using namespace std;

int t;
void work()
{
    int n; 
    string s;
    bool f(0);
    cin >> n >> s;
    for (int i(1); i < n; i += 2) {
        if (s[i] != 'L' || s[i - 1] != 'R') {
            f = 1;
            break;
        }
    }
    if (f || n == 1) cout << "Alice\n";
    else cout << "Bob\n";
}

int main()
{
    cin >> t;
    while (t --) work();

    return 0;
}