#include <iostream>
#include <cstring>

using namespace std;

int n;
string s;

bool check(string t) {
    for (int i = 0; i < t.size() - 1; i ++ )
        if (t[i] == t[i + 1]) return false;
    return true;
}

void solve() {
    cin >> n >> s;
    if (n == 1 || s[0] == 'L' || s[n - 1] == 'R') {
        puts("Alice");
        return;
    }
    if (check(s)) puts("Bob");
    else {
        int pos = -1;
        for (int i = 0; i < n - 1; i ++ )
            if (s[i] == s[i + 1] && s[i] == 'R') pos = i;
        if (pos != -1) {
            if (check(s.substr(pos + 1))) {
                puts("Alice");
                return;
            }
        }
        pos = -1;
        for (int i = 0; i < n - 1; i ++ )
            if (s[i] == s[i + 1] && s[i] == 'L') {
                pos = i + 1;
                break;
            }
        if (pos != -1) {
            if (check(s.substr(0, pos))) {
                puts("Alice");
                return;
            }
        }
        puts("Bob");
        return;
    }
}

int main() {
    int T;
    cin >> T;
    while (T -- ) solve();
    return 0;
}