#include<bits/stdc++.h>
using namespace std;
void solve() {
    int n; cin >> n;
    string s; cin >> s;
    s = " " + s;
    if(n & 1) {
        cout << "Alice\n";
        return;
    }
    bool ok = 1;
    for(int i = 1; i <= n; i += 2) {
        if(s[i] != 'R' || s[i + 1] != 'L') ok = 0;
    }
    cout << (ok ? "Bob\n" : "Alice\n");
}

int main() {
    int t = 1; 
    cin >> t;
    while(t--) solve();
}