#include <iostream>
#include <vector>
#include <set>
#include <map>
#include <algorithm>
#include <cmath>
#include <string>

using namespace std;
typedef long long ll;
typedef vector<ll> vll;
typedef vector<vector<ll>> vvll;


int main(){
    int T;
    cin >> T;
    while (T--){
        bool lose = false;
        int num_killable = 0;
        int weird_size = 0;

        int a, b;
        cin >> a >> b;
        string s;
        cin >> s;
        s += 'X';
        int len=0;
        for (char c : s){
            if (c=='.') len++;
            else{
                if (len>=b){
                    if(len > 4*b+a-2) {lose = true;}
                    else if(len >= b && len < a) lose = true;
                    else if(len >= a && len < 2*b) num_killable++;
                    else{
                        num_killable++;
                        if (weird_size != 0) lose = true;
                        else weird_size = len;
                    }
                }
                len = 0;
            }
        }
        if (lose){
            cout << "NO\n";
            continue;
        }
        if (weird_size!=0){
            bool even = false, odd = false;
            if (weird_size <= a+2*b-2) even = true;
            if (weird_size <= a + 3*b-2 && weird_size >= 2*a) odd = true;
            if (weird_size >= 3*a && weird_size <=a+4*b-2) even = true;
            if (even && odd){
                cout << "YES\n";
                continue;
            }
            if (!even && !odd) {
                cout << "NO\n";
                continue;
            }
            if (odd) num_killable++;
        }
        if (num_killable%2==0){
            cout << "NO\n";
        }
        else{
            cout << "YES\n";
        }
    }
}