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

#define F first
#define S second
#define ar array
typedef int uci;
#define int long long
#define ll long long

void solve(){
    int n; cin >> n;
    string s; cin >> s;

    if (s[0] == 'L' or s[n-1] == 'R') {
        cout << "Alice\n";
    }
    else {
        for (int i = 0; i < n-1; i++) {
            if (s[i] == s[i+1]) {
                cout << "Alice\n";
                return;
            }
        }

        cout << "Bob\n";
    }
}


uci main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    int t; cin >> t;
    while (t--) {
        solve();
    }
}