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

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

    vector<pair<char, int>> a;
    for (int i = 0; i < n; i++) {
        int j = i;
        while (j + 1 < n && s[j + 1] == s[i]) j++;
        a.push_back({s[i], j - i + 1});
        i = j;
    }
    
    char op = 'R';
    if ((a.size() & 1) || a[0].first == 'L') {
        cout << "Alice\n";
        return;
    }

    for (int i = 0; i < a.size(); i += 2) {
        if (a[i].second != a[i + 1].second) {
            cout << "Alice\n";
            return;
        }
    }

    cout << "Bob\n";
}

signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int T;
    cin >> T;
    while (T--) solve();
    return 0 ;
}